scooter vs scoter

scooter and scoter both are nouns.

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

As nouns, scooter and scoter are synonyms defined as:

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

scooter (noun)	scoter (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