fingerspell vs finger-spell

fingerspell and finger-spell both are verbs.

Word	Noun	Adjective	Verb	Adverb
fingerspell	No	No	Yes	No
finger-spell	No	No	Yes	No

As verbs, fingerspell and finger-spell are synonyms defined as:

fingerspell and finger-spell: communicate by means of specific gestures, as an alternative to sign language

fingerspell (verb)	finger-spell (verb)
communicate by means of specific gestures, as an alternative to sign language	communicate by means of specific gestures, as an alternative to sign language