The act or state of knowing; the exercise of the understanding.

The capacity to know or understand; readiness of comprehension; the intellect, as a gift or an endowment.

Intelligence is a generic term for various cognitive abilities. It is classified into different components, depending on the intelligence theory (e. g. in his work "The Berlin Model of Intelligence", A.O. Jäger lists: cognitive speed, memory, creativity, and reasoning to process verbal, numerical and figural material). General features of all intelligence definitions include: quality of solution and speed in resolving completely new (i.e. non-routine) tasks, also frequently defined as 'the ability to learn'.

the ability to learn or understand from experience; ability to acquire and retain knowledge; mental ability.

Information communicated; news; notice; advice.

Knowledge imparted or acquired, whether by study, research, or experience; general information.

Information about an enemy or potential enemy, his capacities, and intentions.

The division within a military organization that gathers and evaluates information about an enemy.