silica gel vs colloid

silica gel and colloid both are nouns.

Word	Noun	Adjective	Verb	Adverb
silica gel	Yes	No	No	No
colloid	Yes	No	No	No

As nouns, colloid is a hypernym of silica gel; that is, colloid is a word with a broader meaning than silica gel:

silica gel: a porous form of silica that is highly absorbent
colloid: a mixture with properties between those of a solution and fine suspension

silica gel (noun)	colloid (noun)
a porous form of silica that is highly absorbent	a mixture with properties between those of a solution and fine suspension