
drtreelove
Answered on December 26, 2018
I believe the larger one is a "barrel cactus", but not sure which species/variety.
https://en.wikipedia.org/wiki/Barrel_cactus
The smaller one appears to be a 'grafted' cactus, with a "root stock" that appears to be of the genus Hylocereus, like the Costa Rica Nightblooming Cactus.
https://worldofsucculents.com/what-are-grafted-cacti/
You may be able to get more specific identification through searching this website:
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