tweak vs pinch

tweak and pinch both are nouns.

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

As nouns, tweak and pinch are synonyms defined as:

As verbs, pinch is a hypernym of tweak; that is, pinch is a word with a broader meaning than tweak:

Other hypernyms of tweak include nip, squeeze, tweet, twinge, twitch.

tweak (noun)	pinch (noun)
a squeeze with the fingers	a squeeze with the fingers
	the act of apprehending (especially apprehending a criminal)
	a small sharp bite or snip
	a sudden unforeseen crisis (usually involving danger) that requires immediate action
	a slight but appreciable amount
	an injury resulting from getting some body part squeezed
	a painful or straitened circumstance

tweak (verb)	pinch (verb)
adjust finely	irritate as if by a nip, pinch, or tear
to be under the influence of methamphetamine	squeeze tightly between the fingers
pull or pull out sharply	make ridges into by pinching together
pinch or squeeze sharply	cut the top off
	make off with belongings of others