scoter vs scooter

scoter and scooter both are nouns.

Word	Noun	Adjective	Verb	Adverb
scoter	Yes	No	No	No
scooter	Yes	No	No	No

As nouns, scoter and scooter are synonyms defined as:

scoter and scooter: large black diving duck of northern parts of the Northern Hemisphere

scoter (noun)	scooter (noun)
large black diving duck of northern parts of the Northern Hemisphere	large black diving duck of northern parts of the Northern Hemisphere
	child's two-wheeled vehicle operated by foot
	a wheeled vehicle with small wheels and a low-powered gasoline engine geared to the rear wheel
	a sailing vessel with runners and a cross-shaped frame; suitable for traveling over ice
	a motorboat resembling a motor scooter