Lock for retaining first component to second component and assembly of first component and second component

The invention relates to a lock for holding a first component to a second component, comprising a holding body having a socket for receiving a protruding component of the second component, the holding body having a wall forming a socket boundary, a locking element having a projection wherein the locking element has a first position in which the projection is in a locked position, and a lever in which the projection is in the locked position. The locking element has a locking position in which the projection protrudes from the wall by a first amount into the socket, and a second position in which the projection is in the release position, in the release position, or the projection protrudes from the wall by a second amount into the socket, the second amount being less than the first amount, or the projection does not protrude from the wall, wherein the protrusion is movable relative to the retaining body in a retraction direction from a locking position to a release position, and wherein the lever has a first