What's the difference between lighter and righter?

Lighter

Definition:

(n.) One who, or that which, lights; as, a lighter of lamps.
(n.) A large boat or barge, mainly used in unloading or loading vessels which can not reach the wharves at the place of shipment or delivery.
(v. t.) To convey by a lighter, as to or from the shore; as, to lighter the cargo of a ship.

Example Sentences:

(1) By the 1860s, French designs were using larger front wheels and steel frames, which although lighter were more rigid, leading to its nickname of “boneshaker”.
(2) These animals spent a much greater portion of their SWS in the lighter SWS I, as compared to the control group which showed a predominance of the deeper SWS II.
(3) The dumplings could also be served pan-fried in browned butter and tossed with a bitter leaf salad and fresh sheep's cheese for a lighter, but equally delicious option.
(4) These denser gradient fractions were rich in synaptosomes containing norepinephrine, dopamine, serotonin, and acetylcholine, while synaptosomes in lighter portions of the gradients were rich in gamma-aminobutyric acid and other amino acids.
(5) An analysis of the IQs for heavier and lighter birthweight twins suggests that the main effect of the identical twin transfusion syndrome is to lower the IQ of the lighter birthweight twin, rather than to raise the IQ of the more fortunate partner or to influence the IQ of both members.
(6) Nafazatrom-treated mice tended to have lighter tumours.
(7) When the lipid mixture containing dimyristoylglycerophosphocholine, cholesterol, dipalmitoylglycerophosphoserine and dipalmitoylglycerophosphoethanolamine at molar ratios of 54:35:10:1 was reconstituted with alpha- and beta gamma-subunits of Go-proteins purified to homogeneity from bovine brain, the lipid-rich lighter vesicle fraction I took up these subunits nearly exclusively.
(8) Lighter calves developed hypomagnesaemia more readily and fast-growing calves had lower plasma urea concentrations.
(9) The basophilic, HD-rich cells appear to replace the lighter HD-poor cells.
(10) The documentary has its lighter moments, too – not all of them intentional.
(11) A centrifugal method of red cell density separation was utilized for unit processing in these studies to determine the quality of the lighter fraction (neocytes) after storage for up to 42 d and to evaluate whether the heavier fraction (gerocytes) deteriorated more rapidly than neocytes during storage.
(12) Throughout the investigation the weekly mean weight of affected birds was very significantly lighter (P less than 0.001) than that of unaffected and control birds.
(13) In these six pairs a normal ponderal index in the lighter twin members was associated with poorer growth than a low ponderal index.
(14) Area 17 projected most heavily to the dorsal stratum opticum (SO) and lower half of stratum griseum superficiale (SGS) with lighter label extending up to the collicular surface.
(15) Birthweights of affected lambs were usually significantly lighter than those of unaffected lambs of similar sex and birth-type, and their mean duration of gestation was slightly, and significantly, prolonged.
(16) If you're in doubt of the impact this can have, "brand imagery" studies show that when participants smoke the exact same cigarettes presented in lighter coloured packs, or in packs with "mild" in the name, they rate the smoke as lighter and less harsh, simply through the power of suggestion.
(17) The problem is that rugby is a winter sport, played in stodgy conditions up north that don’t really allow for the development of faster, lighter genuine open-side flankers who can match the likes of Richie McCaw, David Pocock, Francois Louw and Michael Hooper.
(18) These findings suggest that patients with Parkinson's disease, when performing under a motor program mode, have difficulty in initiating a sequence and making a transition to lighter force levels after a stressed tap.
(19) After 6 weeks, female treated and control rats had comparable weight gains, but male treated rats were significantly lighter than controls.
(20) Possible reasons for this include fewer poor-risk patients, a lighter level of anaesthesia involving controlled ventilation, and the replacement of uriodone (Diodone) by less toxic contrast media.