understand

verb:to know or realize the meaning of words, a language, or information
- She can understand French but finds it difficult to speak.
verb:to grasp the significance, nature, or explanation of something
- I finally understand how this machine works.
verb:to be sympathetically aware of another's feelings or situation
- I understand how difficult this must be for you.
verb:to interpret or take something in a particular way
- His silence was understood as a sign of agreement.