Plant Identification: CLOSED: Help me narrow down this vine, 2 by Snakejaw

Snakejaw wrote:
Hi all, so this looks to be some variation of Dioscorea, I found it growing in a house we just bought, yard is completely overgrown. I\'m a sugar cane and sweet potato grower (hobbyist) so naturally thought of digging it up and seeing what what kind of yam we got. What kinds of things should I be looking for to identify it as edible or not edible? I know most varieties are not edible so most likely will just enjoy the knowledge unless I can be 100% sure. In the meantime, would be nice to brush up on my plant ID skills. Thanks!