curious vs peculiar

curious and peculiar both are adjectives.

Word	Noun	Adjective	Verb	Adverb
curious	No	Yes	No	No
peculiar	No	Yes	No	No

As adjectives, curious and peculiar are synonyms defined as:

Other synonyms of curious include funny, odd, queer, rum, rummy, singular.

curious (adjective)	peculiar (adjective)
eager to investigate and learn or learn more (sometimes about others' concerns)	characteristic of one only; distinctive or special
beyond or deviating from the usual or expected	unique or specific to a person or thing or category
	beyond or deviating from the usual or expected
	markedly different from the usual; special