theoretical vs speculative

theoretical and speculative both are adjectives.

Word	Noun	Adjective	Verb	Adverb
theoretical	No	Yes	No	No
speculative	No	Yes	No	No

theoretical (adjective)	speculative (adjective)
concerned primarily with theories or hypotheses rather than practical considerations	showing curiosity
concerned with theories rather than their practical applications	not based on fact or investigation
	not financially safe or secure