First, assault is the intentional use of force on another person against his or her will. Touching, slapping, kicking, punching or pushing are all examples of assault. It is also an assault to threaten to use force. For instance, if someone threatens to beat you up, this can be an assault even of the threat is not carried out. If a person tried to assault you but was prevented from actually doing so, he or she can be charged with attempted assault or attempted sexual assault.
Rape is a form of sexual assault which commonly involves forced sexual intercourse.
Consent means that you willingly give permission, through your words or actions, for something to happen. Your consent to the sexual activity must be freely given. You did not consent if you were afraid to fight back or if you were frozen with fear. And, you did not necessarily consent to sexual intercourse of orals sex with someone because you held hands, kissed or fondled each other. No one has the right to force you to engage in any sexual activity against your will.