harbinger vs indicant

harbinger and indicant both are nouns.

Word	Noun	Adjective	Verb	Adverb
harbinger	Yes	No	Yes	No
indicant	Yes	No	No	No

As nouns, indicant is a hypernym of harbinger; that is, indicant is a word with a broader meaning than harbinger:

harbinger: something that precedes and indicates the approach of something or someone
indicant: something that serves to indicate or suggest

Other hypernyms of harbinger include indication.

harbinger (noun)	indicant (noun)
something that precedes and indicates the approach of something or someone	a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time
	something that serves to indicate or suggest

harbinger (verb)	indicant (verb)
foreshadow or presage