As verbs the difference between needed and long
is that
needed is past tense of need while
long is to take a long position in.
As adjectives the difference between needed and long
is that
needed is necessary; being needed while
long is having much distance from one terminating point on an object or an area to another terminating point usually applies to horizontal dimensions; see Usage Notes below.
As an adverb long is
over a great distance in space.
As a noun long is
a long vowel.
As a proper noun Long is
{{surname|from=nicknames}} Originally a nickname for a tall man.