speculate vs invest

speculate and invest both are verbs.

Word	Noun	Adjective	Verb	Adverb
speculate	No	No	Yes	No
invest	No	No	Yes	No

As verbs, invest is a hypernym of speculate; that is, invest is a word with a broader meaning than speculate:

Other hypernyms of speculate include commit, place, put.

speculate (verb)	invest (verb)
reflect deeply on a subject	make an investment
to believe especially on uncertain or tentative grounds	provide with power and authority
talk over conjecturally, or review in an idle or casual way and with an element of doubt or without sufficient reason to reach a conclusion	place ceremoniously or formally in an office or position
invest at a risk	furnish with power or authority; of kings or emperors
	give qualities or abilities to