preclinical trial vs preclinical phase

preclinical trial and preclinical phase both are nouns.

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

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

preclinical trial and preclinical phase: 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 trial include preclinical test.

preclinical trial (noun)	preclinical phase (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