first appearance vs entry

first appearance and entry both are nouns.

Word	Noun	Adjective	Verb	Adverb
first appearance	Yes	No	No	No
entry	Yes	No	No	No

As nouns, first appearance and entry are synonyms defined as:

Other synonyms of first appearance include debut, introduction, launching, unveiling.

first appearance (noun)	entry (noun)
the act of beginning something new	the act of entering
	the act of beginning something new
	something that provides access (to get in or get out)
	something (manuscripts or architectural plans and models or estimates or works of art of all genres etc.) submitted for the judgment of others (as in a competition)
	an item inserted in a written record
	a written record of a commercial transaction