stock-taker vs employee

stock-taker and employee both are nouns.

Word	Noun	Adjective	Verb	Adverb
stock-taker	Yes	No	No	No
employee	Yes	No	No	No

As nouns, employee is a hypernym of stock-taker; that is, employee is a word with a broader meaning than stock-taker:

stock-taker (noun)	employee (noun)
an employee whose job is to take inventory	a worker who is hired to perform a job