tweezer vs pair of pincers

tweezer and pair of pincers both are nouns.

Word	Noun	Adjective	Verb	Adverb
tweezer	Yes	No	No	No
pair of pincers	Yes	No	No	No

As nouns, tweezer and pair of pincers are synonyms defined as:

tweezer and pair of pincers: a hand tool for holding consisting of a compound lever for grasping

Other synonyms of tweezer include pair of tweezers, pincer.

tweezer (noun)	pair of pincers (noun)
a hand tool for holding consisting of a compound lever for grasping	a hand tool for holding consisting of a compound lever for grasping