especially vs particularly

especially and particularly both are adverbs.

Word	Noun	Adjective	Verb	Adverb
especially	No	No	No	Yes
particularly	No	No	No	Yes

As adverbs, especially and particularly are synonyms defined as:

especially and particularly: to a distinctly greater extent or degree than is common

Other synonyms of especially include peculiarly, specially.

especially (adverb)	particularly (adverb)
to a distinctly greater extent or degree than is common	to a distinctly greater extent or degree than is common
in a special manner	uniquely or characteristically
	specifically or especially distinguished from others