Conscious understanding of something.
That which is detected by the five senses; not necessarily understood (imagine looking through fog, trying to understand if you see a small dog or a cat); also that which is detected within consciousness as a thought, intuition, deduction, etc.
Vision (ability)
The organisation, identification and interpretation of sensory information.
Acuity
Rational thinking (or the capacity for it); the cognitive faculties, collectively, of conception, judgment, deduction and intuition.
That which causes something: an efficient cause, a proximate cause.
An excuse: a thought or a consideration offered in support of a determination or an opinion; that which is offered or accepted as an explanation.
A premise placed after its conclusion.
A motive for an action or a determination.
To support with reasons, as a request.
To arrange and present the reasons for or against; to examine or discuss by arguments; to debate or discuss.
To persuade by reasoning or argument.
To find by logical process; to explain or justify by reason or argument.
To deduce or come to a conclusion by being rational
To overcome or conquer by adducing reasons.
To perform a process of deduction or of induction, in order to convince or to confute; to argue.