alluvial cone vs alluvial fan

alluvial cone and alluvial fan both are nouns.

Word	Noun	Adjective	Verb	Adverb
alluvial cone	Yes	No	No	No
alluvial fan	Yes	No	No	No

As nouns, alluvial cone and alluvial fan are synonyms defined as:

alluvial cone and alluvial fan: a fan-shaped deposit where a fast flowing stream flattens out

alluvial cone (noun)	alluvial fan (noun)
a fan-shaped deposit where a fast flowing stream flattens out	a fan-shaped deposit where a fast flowing stream flattens out