complex fraction vs compound fraction

complex fraction and compound fraction both are nouns.

Word	Noun	Adjective	Verb	Adverb
complex fraction	Yes	No	No	No
compound fraction	Yes	No	No	No

As nouns, complex fraction and compound fraction are synonyms defined as:

complex fraction and compound fraction: a fraction with fractions in the numerator or denominator

complex fraction (noun)	compound fraction (noun)
a fraction with fractions in the numerator or denominator	a fraction with fractions in the numerator or denominator