Hashing is a part of encryption, maybe you are the one who needs to shore up on the topic?
Load this page, https://en.wikipedia.org/wiki/Advanced_Encryption_Standard
Ctrl-F "hash". No mention of it.
Before being pedantic at least check out the url in that comment to get the basics going.
You're correct that a pure encryption algorithm doesn't use hashing. But real-world encryption systems will include an HMAC to detect whether messages were altered in transit. HMACs do use hash functions.