live axle vs driving axle

live axle and driving axle both are nouns.

Word	Noun	Adjective	Verb	Adverb
live axle	Yes	No	No	No
driving axle	Yes	No	No	No

As nouns, live axle and driving axle are synonyms defined as:

live axle and driving axle: the axle of a self-propelled vehicle that provides the driving power

live axle (noun)	driving axle (noun)
the axle of a self-propelled vehicle that provides the driving power	the axle of a self-propelled vehicle that provides the driving power