excavator vs shovel

excavator and shovel both are nouns.

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

As nouns, excavator and shovel are synonyms defined as:

Other synonyms of excavator include digger, power shovel.

excavator (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 workman who excavates for foundations of buildings or for quarrying	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

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