scare away vs frighten away

scare away and frighten away both are verbs.

Word	Noun	Adjective	Verb	Adverb
scare away	No	No	Yes	No
frighten away	No	No	Yes	No

As verbs, scare away and frighten away are synonyms defined as:

scare away and frighten away: cause to lose courage; to be daunted; to be scared away

Other synonyms of scare away include dash, daunt, frighten off, pall, scare, scare off.

scare away (verb)	frighten away (verb)
cause to lose courage; to be daunted; to be scared away	cause to lose courage; to be daunted; to be scared away