There are 23 words that end with 'pon'.
upon | capon | gipon |
jupon | yapon | yupon |
crepon | coupon | pompon |
tampon | tarpon | weapon |
yaupon | youpon | dalapon |
crampon | metopon | shippon |
hereupon | bioweapon | thereupon |
whereupon | superweapon | |
Note: These 23 words that end with 'pon' are found from the USA & Canada version of the tournament Scrabble word list.