soya milk vs soymilk

soya milk and soymilk both are nouns.

Word	Noun	Adjective	Verb	Adverb
soya milk	Yes	No	No	No
soymilk	Yes	No	No	No

As nouns, soya milk and soymilk are synonyms defined as:

soya milk and soymilk: a milk substitute containing soybean flour and water; used in some infant formulas and in making tofu

Other synonyms of soya milk include soybean milk.

soya milk (noun)	soymilk (noun)
a milk substitute containing soybean flour and water; used in some infant formulas and in making tofu	a milk substitute containing soybean flour and water; used in some infant formulas and in making tofu