Example : Remember the Alamo.
Remember to call your mother every day!.
Think of the starving children in India!.

Synonyms : remember

Example : He entertained the notion of moving to South America.

Synonyms : entertain, flirt with, think about, toy with

Example : She looked on this affair as a joke.
He thinks of himself as a brilliant musician.
He is reputed to be intelligent.

Synonyms : be known as, esteem, know as, look on, look upon, regard as, repute, take to be

Example : I'm thinking of good food when I talk about France.
Yes, I meant you when I complained about people who gossip!.

Synonyms : have in mind, mean

Example : He thought up a plan to get rich quickly.
No-one had ever thought of such a clever piece of software.

Synonyms : concoct, dream up, hatch, think up

Example : Think of any integer between 1 and 25.