vector vs variable quantity

vector and variable quantity both are nouns.

Word	Noun	Adjective	Verb	Adverb
vector	Yes	No	No	No
variable quantity	Yes	No	No	No

As nouns, variable quantity is a hypernym of vector; that is, variable quantity is a word with a broader meaning than vector:

Other hypernyms of vector include variable.

vector (noun)	variable quantity (noun)
(genetics) a virus or other agent that is used to deliver DNA to a cell	a quantity that can assume any of a set of values
a variable quantity that can be resolved into components
any agent (person or animal or microorganism) that carries and transmits a disease
a straight line segment whose length is magnitude and whose orientation in space is direction