pedestal vs trivet

pedestal and trivet both are nouns.

Word	Noun	Adjective	Verb	Adverb
pedestal	Yes	No	No	No
trivet	Yes	No	No	No

As nouns, trivet is a hyponym of pedestal; that is, trivet is a word with a more specific, narrower meaning than pedestal:

Other hyponyms of pedestal include brass monkey, staddle.

pedestal (noun)	trivet (noun)
a support or foundation	a stand with short feet used under a hot dish on a table
an architectural support or base (as for a column or statue)	a three-legged metal stand for supporting a cooking vessel in a hearth
a position of great esteem (and supposed superiority)