As a Noun:
1. A statement in which you say something is true, usually by moving your head up an down. English = nod.
2. A statement in which you say something is true, especially when it has been claimed to be not true of you. English = affirmation.
3. The saying of yes to an offer. English = acceptance.
4. The act of saying you like something and that it is acceptable. English = approval.
As a Verb or Adjective:
1. To nod your head up and down as a way of indicating your answer or response to something is 'yes'; to say yes. Idiomatic English = give the nod.
2. To say that something is true, especially when it has been claimed to be not true of you. English = affirm.
3. To give someone permission to do something; to okay something.
4. To accept an offer of something; to say something is acceptable. English = approve.
Interactive:
1. Used alone to say yes, give acceptance or show approval. English = 'Yes!'