Close stimulates passage but references barrier.
Female( reproduction) stimulates embryo but references shell (protect).

To open is the disconnected potential of door. To close is the connected actual of door.
To fertilize (male) is the disconnected potential of egg. To female( reproduction) is the connected actual of egg.

q1r stimulates q1s but references q1o.
q1r stimulates q1s but references q1o.

To q1e is the disconnected potential of q1n. To q1r is the connected actual of q1n.
To q1e is the disconnected potential of q1n. To q1r is the connected actual of q1n.