sealant vs sealer

sealant and sealer both are nouns.

Word	Noun	Adjective	Verb	Adverb
sealant	Yes	No	No	No
sealer	Yes	No	No	No

As nouns, sealant and sealer are synonyms defined as:

sealant and sealer: a kind of sealing material that is used to form a hard coating on a porous surface (as a coat of paint or varnish used to size a surface)

sealant (noun)	sealer (noun)
a kind of sealing material that is used to form a hard coating on a porous surface (as a coat of paint or varnish used to size a surface)	an official who affixes a seal to a document
	a kind of sealing material that is used to form a hard coating on a porous surface (as a coat of paint or varnish used to size a surface)