digger vs shovel

digger and shovel both are nouns.

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

As nouns, digger and shovel are synonyms defined as:

Other synonyms of digger include excavator, power shovel.

digger (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 laborer who digs	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

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