repeating decimal vs circulating decimal

repeating decimal and circulating decimal both are nouns.

Word	Noun	Adjective	Verb	Adverb
repeating decimal	Yes	No	No	No
circulating decimal	Yes	No	No	No

As nouns, repeating decimal and circulating decimal are synonyms defined as:

repeating decimal and circulating decimal: a decimal with a sequence of digits that repeats itself indefinitely

Other synonyms of repeating decimal include recurring decimal.

repeating decimal (noun)	circulating decimal (noun)
a decimal with a sequence of digits that repeats itself indefinitely	a decimal with a sequence of digits that repeats itself indefinitely