preclinical phase vs preclinical test

preclinical phase and preclinical test both are nouns.

Word	Noun	Adjective	Verb	Adverb
preclinical phase	Yes	No	No	No
preclinical test	Yes	No	No	No

As nouns, preclinical phase and preclinical test are synonyms defined as:

preclinical phase and preclinical test: a laboratory test of a new drug or a new invasive medical device on animal subjects; conducted to gather evidence justifying a clinical trial

Other synonyms of preclinical phase include preclinical trial.

preclinical phase (noun)	preclinical test (noun)
a laboratory test of a new drug or a new invasive medical device on animal subjects; conducted to gather evidence justifying a clinical trial	a laboratory test of a new drug or a new invasive medical device on animal subjects; conducted to gather evidence justifying a clinical trial