What's the difference between stub and stut?

Stub

Definition:

(n.) The stump of a tree; that part of a tree or plant which remains fixed in the earth when the stem is cut down; -- applied especially to the stump of a small tree, or shrub.
(n.) A log; a block; a blockhead.
(n.) The short blunt part of anything after larger part has been broken off or used up; hence, anything short and thick; as, the stub of a pencil, candle, or cigar.
(n.) A part of a leaf in a check book, after a check is torn out, on which the number, amount, and destination of the check are usually recorded.
(n.) A pen with a short, blunt nib.
(n.) A stub nail; an old horseshoe nail; also, stub iron.
(v. t.) To grub up by the roots; to extirpate; as, to stub up edible roots.
(v. t.) To remove stubs from; as, to stub land.
(v. t.) To strike as the toes, against a stub, stone, or other fixed object.

Example Sentences:

(1) The majority of the mutants were unable to assemble a flagellar filament (Fla-), although eight were able to synthesize a short stub of a flagellum.
(2) Vauxhall Tower Like a cigarette stubbed out by the Thames, the Vauxhall's lonely stump looks cast adrift, a piece of Pudong that's lost its way.
(3) The teeth were air dried, mounted on stubs, sputter-coated with gold-palladium and examined under SEM.
(4) Subsequently, the slides were fractured for attachment to SEM stubs, and the coverslips were demounted.
(5) The task consisted of 36 sentence stubs, 18 of which probed attitudes toward sex.
(6) This digested product reacted with an anti-stub antibody which recognizes 4-sulfated disaccharide.
(7) Platinum-carbon replicas were made of the surfaces of both the sections and the complementary surfaces of the sample stubs from which the sections were cut.
(8) Genetic analysis by phiCr30-mediated transduction revealed 27 linkage groups for the fla and stub-forming mutations, and three linkage groups for the mot mutations.
(9) There were more than 150, some on smart, headed paper, some on notebook pages, written with stubs of pencil.
(10) isoamylase is unable to cleave D-glucosyl stubs from branched saccharides.
(11) It has been determined a bacteriolytic action on the bacterial stub "E. Coli host of bacteriophage T4.
(12) Due to the anatomic relationship of bone and nail, a 'stubbed finger' injury may result in an inapparent compound fracture.
(13) When Jane Grigson did her delightful last series Slow Down, Fast Food, we photographed a gigantic hamburger with an implausible bite taken out of it, our tasteful riposte to the cigarette-stubbed-out-in-the-fried-egg school of lurid food photography.
(14) In 2004, he stubbed a cigar out in the eye of City colleague Jamie Tandy at the club's Christmas party; the following year, he was found guilty of gross misconduct after a disturbance in Bangkok with a teenage Everton fan.
(15) Monoclonal antibodies 9-A-2 and 2-B-6 which recognize stubs of chondroitin 4-sulfate were found to bind specifically to the NC3 domain of type IX collagen, and this binding was dependent on prior digestion of the preparation with chondroitinase ABC.
(16) Simultaneously with the penetration into the snail tissue the "bald" cells (epithelial cells with cilium stubs only) of the four posterior tiers loosen, florm globules and fall off.
(17) He stubbed out cigarette butts on her face and chopped off part of a finger.
(18) During erythroid development and enucleation, the actin filaments may depolymerize up to the membrane, leaving a membrane skeleton with short stubs of actin bundled by band 4.9 and cross-linked by spectrin.
(19) thick) were cut by the method of Tokuyasu (Toluyasu KT: J Cell Biol 57:551, 1973) and their scanning transmission electron microscope images were examined either with a scanning transmission electron microscope detector or with a conversion stub using the secondary electron detector.
(20) Maltose and maltotriose stubs preponderated together with small proportions of D-glucose stubs.