As adjectives the difference between yonic and nonic
is that
yonic is in the shape of a vulva or a vagina; in the shape of a yoni while
nonic is (mathematics) describing a polynomial that has 9 as the highest exponent of its terms.
yonic English
Adjective
( en adjective)
In the shape of a vulva or a vagina; in the shape of a yoni.
* 1999 , Perry Bathous, ?Clarissa Flanders, SwellWimp , page 107:
 Many orchids are yonic .
* 2011 , Manly P. Hall, The Secret Teachings of All Ages , page 226:
 The Garden of Eden, the Ark, the Gate of the Temple, the Veil of the Mysteries, the vesica piscis or oval nimbus, and the Holy Grail are important yonic symbols
* 2012 , Debora Cordeiro Rosa, Trauma, Memory and Identity in Five Jewish Novels :
 Porzecanski employs two recurrent phallic and yonic symbols in the narrative.
Antonyms
* phallic

nonic English
Adjective
( )
(mathematics) Describing a polynomial that has 9 as the highest exponent of its terms.
(algebraic geometry) Describing a curve the equation of which is nonic.
Describing a type of beer glass used in British public houses; in the form of a truncated cone with a bulge around outside, just below the rim.
 a 20ounce nonic glass
