To perceive differences.
To distinguish something as being different from something else; to differentiate.
To perceive, recognize, or comprehend with the mind; to descry.
To detect with the senses, especially with the eyes.
To understand.
To take advantage of something, to seize, to jump at a chance.
To grip; to take hold, particularly with the hand.
Understanding.
That which is accessible; that which is within one's reach or ability.
Grip.