soy sauce vs soya bean

soy sauce and soya bean both are nouns.

Word	Noun	Adjective	Verb	Adverb
soy sauce	Yes	No	No	No
soya bean	Yes	No	No	No

soy sauce (noun)	soya bean (noun)
thin sauce made of fermented soy beans	the most highly proteinaceous vegetable known; the fruit of the soybean plant is used in a variety of foods and as fodder (especially as a replacement for animal protein)
	erect bushy hairy annual herb having trifoliate leaves and purple to pink flowers; extensively cultivated for food and forage and soil improvement but especially for its nutritious oil-rich seeds; native to Asia
	a source of oil; used for forage and soil improvement and as food