invest vs speculate

invest and speculate both are verbs.

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

As verbs, speculate is a hyponym of invest; that is, speculate is a word with a more specific, narrower meaning than invest:

Other hyponyms of invest include fund, roll over, shelter, tie up, job, buy into.

invest (verb)	speculate (verb)
make an investment	reflect deeply on a subject
provide with power and authority	to believe especially on uncertain or tentative grounds
place ceremoniously or formally in an office or position	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
furnish with power or authority; of kings or emperors	invest at a risk
give qualities or abilities to