significative vs indicative

significative is not a noun while indicative is a noun.

Word	Noun	Adjective	Verb	Adverb
significative	No	Yes	No	No
indicative	Yes	Yes	No	No

As adjectives, significative and indicative are synonyms defined as:

significative and indicative: (usually followed by `of') pointing out or revealing clearly

Other synonyms of significative include indicatory, revelatory, suggestive.

significative (noun)	indicative (noun)
	a mood (grammatically unmarked) that represents the act or state as an objective fact

significative (adjective)	indicative (adjective)
(usually followed by `of') pointing out or revealing clearly	relating to the mood of verbs that is used simple in declarative statements
	(usually followed by `of') pointing out or revealing clearly