"Tahiyyah": greeting, saying to someone "hayyak Allah", which means: May Allah give you life. It also refers to any word or deed said or done upon meeting between people, by way of honor.
"Musāfahah": placing one’s hand in the hand of another. It is derived from "sufh", which means: the side of something.
Spreading the greeting of Salam and extending it to every Muslim orally or in a written form.
Entering in a gentle way that brings reassurance, safety, and delight.
Asking permission from the members of a household to enter their house.