neurotropism vs tropism

neurotropism and tropism both are nouns.

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

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

neurotropism: an affinity for neural tissues
tropism: an involuntary orienting response; positive or negative reaction to a stimulus source

neurotropism (noun)	tropism (noun)
an affinity for neural tissues	an involuntary orienting response; positive or negative reaction to a stimulus source