The difference between Apparent and Certain

When used as adjectives, apparent means capable of being seen, or easily seen, whereas certain means sure, positive, not doubting.

Certain is also determiner with the meaning: having been determined but not specified.

Certain is also noun with the meaning: something certain.

Certain is also pronoun with the meaning: unnamed or undescribed members (of).

check bellow for the other definitions of Apparent and Certain

Apparent as an adjective:

Capable of being seen, or easily seen; open to view; visible to the eye, eyely; within sight or view.
Apparent as an adjective:

Clear or manifest to the understanding; plain; evident; obvious; known; palpable; indubitable.
Apparent as an adjective:

Appearing to the eye or mind (distinguished from, but not necessarily opposed to, true or real); seeming.

Certain as an adjective:

Sure, positive, not doubting.

Examples:

"I was certain of my decision."
Certain as an adjective (obsolete):

Determined; resolved.
Certain as an adjective:

Not to be doubted or denied; established as a fact.
Certain as an adjective:

Actually existing; sure to happen; inevitable.

Examples:

"Bankruptcy is the certain outcome of your constant gambling and lending."
Certain as an adjective:

Unfailing; infallible.
Certain as an adjective:

Fixed or stated; regular; determinate.
Certain as an adjective:

Not specifically named; indeterminate; indefinite; one or some; sometimes used independently as a noun, and meaning certain persons; see also "one".

Certain as a pronoun (with ''of''):

Unnamed or undescribed members (of).

Examples:

"There where serious objections to certain of the proposals."