potato vs tater

potato and tater both are nouns.

Word	Noun	Adjective	Verb	Adverb
potato	Yes	No	No	No
tater	Yes	No	No	No

As nouns, potato and tater are synonyms defined as:

potato and tater: an edible tuber native to South America; a staple food of Ireland

Other synonyms of potato include Irish potato, murphy, spud, white potato.

potato (noun)	tater (noun)
an edible tuber native to South America; a staple food of Ireland	an edible tuber native to South America; a staple food of Ireland
annual native to South America having underground stolons bearing edible starchy tubers; widely cultivated as a garden vegetable; vines are poisonous