excite vs frighten

excite and frighten both are verbs.

Word	Noun	Adjective	Verb	Adverb
excite	No	No	Yes	No
frighten	No	No	Yes	No

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

excite (verb)	frighten (verb)
act as a stimulant	cause fear in
produce a magnetic field in
raise to a higher energy level
stir the feelings, emotions, or peace of
to evoke sexual feelings
arouse or elicit a feeling
cause to be agitated, excited, or roused
stir feelings in