booster cable vs jumper lead

booster cable and jumper lead both are nouns.

Word	Noun	Adjective	Verb	Adverb
booster cable	Yes	No	No	No
jumper lead	Yes	No	No	No

As nouns, booster cable and jumper lead are synonyms defined as:

booster cable and jumper lead: a jumper that consists of a short piece of wire

Other synonyms of booster cable include jumper cable, lead.

booster cable (noun)	jumper lead (noun)
a jumper that consists of a short piece of wire	a jumper that consists of a short piece of wire