The difference between Consider and Deem

When used as verbs, consider means to think about seriously, whereas deem means to judge, to pass judgment on.

Deem is also noun with the meaning: an opinion, a judgment, a surmise.

check bellow for the other definitions of Consider and Deem

Consider as a verb (transitive):

To think about seriously.

Examples:

"'Consider that we’ve had three major events and the year has hardly begun."
Consider as a verb (intransitive):

To think about something seriously or carefully: to deliberate.
Consider as a verb (transitive):

To think of doing.

Examples:

"I’m considering going to the beach tomorrow."
Consider as a verb (ditransitive):

To assign some quality to.

Examples:

"'Consider yourself lucky, but consider your opponent skillful."

"I considered the pie undercooked."
Consider as a verb (transitive):

To look at attentively.

Examples:

"She sat there for a moment, considering him."
Consider as a verb (transitive):

To take up as an example.

Examples:

"'Consider a triangle having three equal sides."
Consider as a verb (transitive, parliamentary procedure):

To debate or dispose of a motion.

Examples:

"This body will now consider the proposed amendments to Section 453 of the zoning code."
Consider as a verb:

To have regard to; to take into view or account; to pay due attention to; to respect.

Deem as a verb (transitive, obsolete):

To judge, to pass judgment on; to doom, to sentence.
Deem as a verb (transitive, obsolete):

To adjudge, to decree.
Deem as a verb (transitive, obsolete):

To dispense (justice); to administer (law).
Deem as a verb (transitive):

To hold in belief or estimation; to adjudge as a conclusion; to regard as being; to evaluate according to one's beliefs; to account.

Examples:

"She deemed his efforts insufficient."
Deem as a verb (ambitransitive):

To think, judge, or hold as an opinion; to decide or believe on consideration; to suppose.
Deem as a verb (intransitive):

To have or hold as an opinion; to judge; to think.