jump-start vs jumpstart

jump-start and jumpstart both are nouns.

Word	Noun	Adjective	Verb	Adverb
jump-start	Yes	No	Yes	No
jumpstart	Yes	No	Yes	No

As nouns, jump-start and jumpstart are synonyms defined as:

jump-start and jumpstart: starting an automobile engine that has a weak battery by means of jumper cables to another car

As verbs, jump-start and jumpstart are synonyms defined as:

As verbs, jump-start and jumpstart are synonyms defined as:

jump-start and jumpstart: start (a car engine whose battery is dead) by connecting it to another car's battery

Other synonyms of jump-start include jump.

jump-start (noun)	jumpstart (noun)
starting an automobile engine that has a weak battery by means of jumper cables to another car	starting an automobile engine that has a weak battery by means of jumper cables to another car

jump-start (verb)	jumpstart (verb)
start or re-start vigorously	start or re-start vigorously
start (a car engine whose battery is dead) by connecting it to another car's battery	start (a car engine whose battery is dead) by connecting it to another car's battery