tweet vs tweak

tweet and tweak both are nouns.

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

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

Other hyponyms of tweet include goose.

tweet (noun)	tweak (noun)
A post on the social media site Twitter	a squeeze with the fingers
a weak chirping sound as of a small bird

tweet (verb)	tweak (verb)
To post a message on Twitter; post tweets, i.e. short text messages on the popular social media website Twitter	adjust finely
squeeze tightly between the fingers	to be under the influence of methamphetamine
make a weak, chirping sound	pull or pull out sharply
	pinch or squeeze sharply