twitch vs tweak

twitch and tweak both are nouns.

Word	Noun	Adjective	Verb	Adverb
twitch	Yes	No	Yes	No
tweak	Yes	No	Yes	No

As verbs, tweak is a hyponym of twitch; that is, tweak is a word with a more specific, narrower meaning than twitch:

Other hyponyms of twitch include goose.

twitch (noun)	tweak (noun)
a sudden muscle spasm; especially one caused by a nervous condition	a squeeze with the fingers

twitch (verb)	tweak (verb)
make an uncontrolled, short, jerky motion	adjust finely
squeeze tightly between the fingers	to be under the influence of methamphetamine
move or pull with a sudden motion	pull or pull out sharply
toss with a sharp movement so as to cause to turn over in the air	pinch or squeeze sharply
move with abrupt, seemingly uncontrolled motions