activate vs reactivate

activate and reactivate both are verbs.

Word	Noun	Adjective	Verb	Adverb
activate	No	No	Yes	No
reactivate	No	No	Yes	No

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

activate (verb)	reactivate (verb)
make active or more active	activate (an old file) anew
make (substances) radioactive
aerate (sewage) so as to favor the growth of organisms that decompose organic matter
make more adsorptive
put in motion or move to act