field test vs tryout

field test and tryout both are nouns.

Word	Noun	Adjective	Verb	Adverb
field test	Yes	No	No	No
tryout	Yes	No	No	No

As nouns, tryout is a hypernym of field test; that is, tryout is a word with a broader meaning than field test:

field test: a test of the performance of some new product under the conditions in which it will be used
tryout: trying something to find out about it

Other hypernyms of field test include test, trial, trial run.

field test (noun)	tryout (noun)
a test of the performance of some new product under the conditions in which it will be used	a test of the suitability of a performer
	trying something to find out about it