picker vs chicken sexer

picker and chicken sexer both are nouns.

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

As nouns, chicken sexer is a hyponym of picker; that is, chicken sexer is a word with a more specific, narrower meaning than picker:

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

Other hyponyms of picker include chick sexer.

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