chemoautotroph vs autophyte

chemoautotroph and autophyte both are nouns.

Word	Noun	Adjective	Verb	Adverb
chemoautotroph	Yes	No	No	No
autophyte	Yes	No	No	No

As nouns, autophyte is a hypernym of chemoautotroph; that is, autophyte is a word with a broader meaning than chemoautotroph:

chemoautotroph: An organism that depends on chemicals for its energy and principally on carbon dioxide for its carbon.
autophyte: plant capable of synthesizing its own food from simple organic substances

Other hypernyms of chemoautotroph include autophytic plant, autotroph, autotrophic organism.

chemoautotroph (noun)	autophyte (noun)
An organism that depends on chemicals for its energy and principally on carbon dioxide for its carbon.	plant capable of synthesizing its own food from simple organic substances