caustic vs bitter

bitter vs caustic

caustic and bitter both are nouns.

caustic and bitter both are adjectives.

caustic is not a verb while bitter is a verb.

caustic is not an adverb while bitter is an adverb.

Word	Noun	Adjective	Verb	Adverb
caustic	Yes	Yes	No	No
bitter	Yes	Yes	Yes	Yes

As adjectives, caustic and bitter are synonyms defined as:

caustic and bitter: harsh or corrosive in tone

Other synonyms of caustic include acerb, acerbic, acid, acrid, blistering, sulfurous, sulphurous, virulent, vitriolic.

caustic (noun)	bitter (noun)
the envelope of light rays reflected or refracted by a curved surface or object	the property of having a harsh unpleasant taste
any chemical substance that burns or destroys living tissue	the taste experience when quinine or coffee is taken into the mouth
	English term for a dry sharp-tasting ale with strong flavor of hops (usually on draft)

caustic (adjective)	bitter (adjective)
of a substance, especially a strong acid; capable of destroying or eating away by chemical action	proceeding from or exhibiting great hostility or animosity
harsh or corrosive in tone	very difficult to accept or bear
	causing a sharply painful or stinging sensation; used especially of cold
	marked by strong resentment or cynicism
	expressive of severe grief or regret
	causing a sharp and acrid taste experience
	harsh or corrosive in tone

caustic (verb)	bitter (verb)
	make bitter

caustic (adverb)	bitter (adverb)
	extremely and sharply

Difference between caustic and bitter

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