ergotropism vs tropism

ergotropism and tropism both are nouns.

Word	Noun	Adjective	Verb	Adverb
ergotropism	Yes	No	No	No
tropism	Yes	No	No	No

As nouns, tropism is a hypernym of ergotropism; that is, tropism is a word with a broader meaning than ergotropism:

ergotropism: an affinity for work
tropism: an involuntary orienting response; positive or negative reaction to a stimulus source

ergotropism (noun)	tropism (noun)
an affinity for work	an involuntary orienting response; positive or negative reaction to a stimulus source