power shovel vs shovel

power shovel and shovel both are nouns.

Word	Noun	Adjective	Verb	Adverb
power shovel	Yes	No	No	No
shovel	Yes	No	Yes	No

As nouns, power shovel and shovel are synonyms defined as:

Other synonyms of power shovel include digger, excavator.

power shovel (noun)	shovel (noun)
a machine for excavating	a hand tool for lifting loose material; consists of a curved container or scoop and a handle
	a fire iron consisting of a small shovel used to scoop coals or ashes in a fireplace
	a machine for excavating
	the quantity a shovel can hold

power shovel (verb)	shovel (verb)
	dig with or as if with a shovel