autotrophic organism vs autotroph

autotrophic organism and autotroph both are nouns.

Word	Noun	Adjective	Verb	Adverb
autotrophic organism	Yes	No	No	No
autotroph	Yes	No	No	No

As nouns, autotrophic organism and autotroph are synonyms defined as:

autotrophic organism and autotroph: plant capable of synthesizing its own food from simple organic substances

Other synonyms of autotrophic organism include autophyte, autophytic plant.

autotrophic organism (noun)	autotroph (noun)
plant capable of synthesizing its own food from simple organic substances	plant capable of synthesizing its own food from simple organic substances