impaction vs impacted tooth

impaction and impacted tooth both are nouns.

Word	Noun	Adjective	Verb	Adverb
impaction	Yes	No	No	No
impacted tooth	Yes	No	No	No

As nouns, impaction and impacted tooth are synonyms defined as:

impaction and impacted tooth: a disorder in which a tooth is so crowded in its socket that it cannot erupt normally

impaction (noun)	impacted tooth (noun)
a sharp collision produced by striking or dashing against something	a disorder in which a tooth is so crowded in its socket that it cannot erupt normally
a disorder in which a tooth is so crowded in its socket that it cannot erupt normally
a disorder in which feces are impacted in the lower colon
the condition of being pressed closely together and firmly fixed