soyabean oil vs vegetable oil

soyabean oil and vegetable oil both are nouns.

Word	Noun	Adjective	Verb	Adverb
soyabean oil	Yes	No	No	No
vegetable oil	Yes	No	No	No

As nouns, vegetable oil is a hypernym of soyabean oil; that is, vegetable oil is a word with a broader meaning than soyabean oil:

soyabean oil: oil from soya beans
vegetable oil: any of a group of liquid edible fats that are obtained from plants

Other hypernyms of soyabean oil include oil.

soyabean oil (noun)	vegetable oil (noun)
oil from soya beans	any of a group of liquid edible fats that are obtained from plants