the restriction of GENDER within the binary pair

 I feel like a natural woman

one is one gender to the extent that one is not the other gender

Here we are guided by an ontological - (the branch of metaphysics dealing with the nature of being:) concept that deals with the

nature of being along with a whole nebula (a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter) of other primitive concepts.