siccative vs drying agent

siccative and drying agent both are nouns.

Word	Noun	Adjective	Verb	Adverb
siccative	Yes	No	No	No
drying agent	Yes	No	No	No

As nouns, siccative and drying agent are synonyms defined as:

siccative and drying agent: a substance that promotes drying (e.g., calcium oxide absorbs water and is used to remove moisture)

Other synonyms of siccative include desiccant, drier.

siccative (noun)	drying agent (noun)
a substance that promotes drying (e.g., calcium oxide absorbs water and is used to remove moisture)	a substance that promotes drying (e.g., calcium oxide absorbs water and is used to remove moisture)