cover

To deal with or include a particular subject or area in a discussion.

"The lecture will cover various aspects of history."

Something that covers or conceals, such as a lid, blanket, or casing.

"Put the cover back on the pot."

To place something over or in front of something else to protect or conceal.

"Please cover the food to keep it warm."

Protection or shelter from danger, bad weather, or attack.

"We took cover from the sudden rain."