entry vs first appearance

entry and first appearance both are nouns.

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

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

Other synonyms of entry include debut, introduction, launching, unveiling.

entry (noun)	first appearance (noun)
the act of entering	the act of beginning something new
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