preclinical phase vs preclinical trial

preclinical phase and preclinical trial both are nouns.

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

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

preclinical phase and preclinical 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

Other synonyms of preclinical phase include preclinical test.

preclinical phase (noun)	preclinical trial (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