chicken sexer vs picker

chicken sexer and picker both are nouns.

Word	Noun	Adjective	Verb	Adverb
chicken sexer	Yes	No	No	No
picker	Yes	No	No	No

As nouns, picker is a hypernym of chicken sexer; that is, picker is a word with a broader meaning than chicken sexer:

chicken sexer: a trained person hired to determine the sex of chicken and other hatchlings.
picker: a person who chooses or selects out

Other hypernyms of chicken sexer include chooser, selector.

chicken sexer (noun)	picker (noun)
a trained person hired to determine the sex of chicken and other hatchlings.	someone who gathers crops or fruits etc.
	a person who chooses or selects out