self-propelling vs self-propelled

self-propelling and self-propelled both are adjectives.

Word	Noun	Adjective	Verb	Adverb
self-propelling	No	Yes	No	No
self-propelled	No	Yes	No	No

As adjectives, self-propelling and self-propelled are synonyms defined as:

self-propelling and self-propelled: moved forward by its own force or momentum

As adjectives, self-propelling and self-propelled are synonyms defined as:

self-propelling and self-propelled: containing within itself the means of propulsion or movement

Other synonyms of self-propelling include automotive.

self-propelling (adjective)	self-propelled (adjective)
moved forward by its own force or momentum	moved forward by its own force or momentum
containing within itself the means of propulsion or movement	containing within itself the means of propulsion or movement