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come over
vs
overcome

Come over is a phrasal verb, that can mean several things.

To move from one place to another, or move towards someone.

For example: "Come over here."

To seem to be a particular type of person.

For example: "Politicians often come over as arrogant."

To be influenced suddenly and unexpectedly by a strange feeling.

For example: "Don't stand up too quickly or you may come over dizzy."

Overcome is a verb, which means to defeat or succeed in controlling or dealing with something.

For example: "Using technology can help many people overcome any disabilities they might have."

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