collet chuck vs collet

collet chuck and collet both are nouns.

Word	Noun	Adjective	Verb	Adverb
collet chuck	Yes	No	No	No
collet	Yes	No	No	No

As nouns, collet chuck and collet are synonyms defined as:

collet chuck and collet: a cone-shaped chuck used for holding cylindrical pieces in a lathe

collet chuck (noun)	collet (noun)
a cone-shaped chuck used for holding cylindrical pieces in a lathe	a band or collar that holds an individual stone in a jewelry setting
	a metal cap or band placed on a wooden pole to prevent splitting
	a cone-shaped chuck used for holding cylindrical pieces in a lathe