What's the difference between couple and duet?

Couple


Definition:

  • (a.) That which joins or links two things together; a bond or tie; a coupler.
  • (a.) Two of the same kind connected or considered together; a pair; a brace.
  • (a.) A male and female associated together; esp., a man and woman who are married or betrothed.
  • (a.) See Couple-close.
  • (a.) One of the pairs of plates of two metals which compose a voltaic battery; -- called a voltaic couple or galvanic couple.
  • (a.) Two rotations, movements, etc., which are equal in amount but opposite in direction, and acting along parallel lines or around parallel axes.
  • (v.) To link or tie, as one thing to another; to connect or fasten together; to join.
  • (v.) To join in wedlock; to marry.
  • (v. i.) To come together as male and female; to copulate.

Example Sentences:

  • (1) Spermine clearly activated 45Ca uptake by coupled mitochondria, but had no effect on Ca2+ egress from mitochondria previously loaded with 45Ca.
  • (2) After transfection in CH4C1 cells the two isoforms are coupled with adenylate cyclase while only the shortest isoform appears negatively coupled to phospholipase C. Functional D2 dopamine receptors are present in human prolactinomas.
  • (3) Ferrocene derivatives, in general, show a degree of versatility, coupling the electron-transfer reactions of many enzymes.
  • (4) Since intracellular Ca2+ seems to play a role in stimulus-secretion coupling and ion movements, several aspects of Ca2+ homeostasis have been investigated in CF.
  • (5) Couples in need of help will be "encouraged" to come to a private agreement.
  • (6) To get a better understanding of the different cell interactions during the immune response to a hapten-carrier complex, the effects of immunogenic or tolerogenic injections of various hapten-containing compounds on the responses induced by immunization with the same hapten coupled to protein carriers were studied.
  • (7) Such a science puts men in a couple of scientific laws and suppresses the moment of active doing (accepting or refusing) as a sufficient preassumption of reality.
  • (8) In contrast, strains carrying the substitutions Ile-30----Phe, Gly-33----Leu, Gly-58----Leu, and Lys-34----Val and the Lys-34----Val, Glu-37----Gln double substitution were found to possess a coupled phenotype similar to that of the wild type.
  • (9) Couples applying to in vitro fertilization were admitted into this project when the sperm concentration was greater than 20 million per mL and motility greater than 30 per cent.
  • (10) Large emission intensity fluctuations are observed from analyte species in inductively coupled plasmas.
  • (11) At the weekend the couple’s daughter, Holly Graham, 29, expressed frustration at the lack of information coming from the Foreign Office and the tour operator that her parents travelled with.
  • (12) These results coupled with previous studies support activation of benz[j]aceanthrylene via both 2 and cyclopenta ring epoxidation.
  • (13) Homologous insemination in 52 couples during a period of one year yields a conception rate of 38.5%.
  • (14) Following the hypothesis that infertile patients may present emotional conflicts with regard to the wish of having a child, psychodynamic interviews were carried out with 116 infertile couples concomitantly with their first consultation at the Sterility Department.
  • (15) The objective of this work was to determine the efficacy of an endoscopic approach coupled to a Nd:YAG laser fiber in performing arytenoidectomy.
  • (16) During the couple's 30-year marriage she had twice reported him to the police for grabbing her by the throat, before they divorced in 2005.
  • (17) The rate of indole production is increased about 4-fold when the aminoacrylate produced is converted to S-(hydroxyethyl)-L-cysteine by a coupled beta-replacement reaction with beta-mercaptoethanol.
  • (18) Single injections never produced more than one coupled pair in P20 or older rats.
  • (19) The extensive conversion of anti-BPDE to B[a]PT-10-sulfonate under conditions where sulfite enhances diolepoxide mutagenicity, when coupled with this enhancement of diolepoxide mutagenicity by B[a]PT-10-sulfonate in the reverse mutation assay, supports this novel B[a]P derivative as a mediator of the sulfite-dependent enhancement of B[a]P genotoxicity.
  • (20) Bobbing in warming waters, this ancient ice fossil will be gone in a couple of weeks.

Duet


Definition:

  • (n.) A composition for two performers, whether vocal or instrumental.

Example Sentences:

  • (1) Both Jones and Cullum played a number of live tracks and sang a duet too, and this is the new programme's backbone.
  • (2) Alicia Keys and John Legend will duet on Let It Be , while John Mayer has agreed to join country singer Keith Urban for a rendition of Don't Let Me Down .
  • (3) The album is John Ogdon and Brenda Lucas's album Two Pianos, featuring duets by Mozart, Brahms and Lutosławski.
  • (4) There are highlights, among them the Foo Fighters' energising effect on a flagging audience, the noise the same audience makes when James Blunt appears - half cheer, half menacing low growl - and Madonna's unexpected duet with Eugene Hutz of thrillingly dissolute gypsy punks Gogol Bordello.
  • (5) In Sacred Monsters , her 2006 duet with Akram Khan, she explored fluidity of Asian movement and the challenge of the spoken work: in Robert Lepage’s Eonnagata she moved towards experimental theatre, and in her subsequent collaborations with Maliphant she developed a rich new palette of rapt, inwardly focused dance.
  • (6) This autumn’s project should deliver sparks as Khan creates and performs a duet with flamenco iconoclast Galván, exploring their fascination with rhythm, gesture, pattern and myth.
  • (7) This resulted in significant changes in frequency of duetting.
  • (8) He seems equally startled when talk turns to his 1989 remake of Something's Gotten Hold of My Heart, the duet with gay icon Marc Almond that returned him to the top of the British charts 15 years after his last hit.
  • (9) It is understood that the letter raises issues such as noise – in July Bruce Springsteen and Sir Paul McCartney's microphones were switched off during a duet due to curfew issues .
  • (10) Susan Boyle and Elvis Presley's duet, "Oh Come All Ye Faithful", is released today – all proceeds go to Save the Children .
  • (11) Within a week we’ve heard that the acclaimed singer-songwriters Ed Harcourt and Kathryn Williams are willing to sing our duet.
  • (12) He's had a few close shaves (a duet with Cocteau Twins' Liz Frazer and an appearance on The One Show spring to mind) but the idea of maintaining a fanbase, even a cult one, is alien to Lawrence.
  • (13) A film he was to star in about the Silk Road, written by Gulnara Karimova, the daughter of Uzbekistan's president, seems however to have broken down in the wake of bitter family infighting – but they'll always have the duet they recorded together, How Dare .
  • (14) Any Moldy Peach diehards balking at the idea of Green duetting with someone other than Dawson are missing out, though: this record sounds as though he and Shapiro have known each other for ever.
  • (15) I told him one day, 'Let's do a small duet of baritone and soprano,' and he said, 'No, no, my fans only know me as a rock singer and they will not recognise my voice if I sing in baritone.'
  • (16) Duets are Maliphant's forte – even his solos often feel like duets, in which one of the partners is light, space or sound.
  • (17) I've got a new duet, as we call them, out now, or coming out now.
  • (18) A couple of years later, Wright and Jack Anglin formed a duet act, Johnnie & Jack, and she toured with them in the then conventional role of the "girl singer".
  • (19) On Saturday's show, the four remaining finalists will compete with each other by singing solo and duetting with established acts before two rounds of voting leave two acts in a head-to-head on Sunday's show.
  • (20) Apart from a brief and unhappy appearance on the BBC's Just the Two of Us (a celebrity duet singing contest in which she was partnered with Alexander O'Neal) in 2006 – "Never again!"