water waggon vs water wagon

water waggon and water wagon both are nouns.

Word	Noun	Adjective	Verb	Adverb
water waggon	Yes	No	No	No
water wagon	Yes	No	No	No

As nouns, water waggon and water wagon are synonyms defined as:

water waggon and water wagon: a wagon that carries water (as for troops or work gangs or to sprinkle down dusty dirt roads in the summertime)

water waggon (noun)	water wagon (noun)
a wagon that carries water (as for troops or work gangs or to sprinkle down dusty dirt roads in the summertime)	a wagon that carries water (as for troops or work gangs or to sprinkle down dusty dirt roads in the summertime)