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May be Encryption will have a reverse algorithm for decryption and to get back the original value.
With hashing, its not possible to get the original value from the hash output.

hash table is a kind of data structure, but the encryption is a way to manipulate the data.

1. Hashing is one way process used to secure things like passwords etc.

2. Encryption is reversible process to encrypt original content and then decrypt it back again using keys.

A good analogy I read on Stack Overflow (bad I cannot post actual link, //stackoverflow/questions/4948322/fundamental-difference-between-hashing-and-encryption-algorithms)

A hash function could be considered the same as baking a loaf of bread. You start out with inputs (flour, water, yeast, etc...) and after applying the hash function (mixing + baking), you end up with an output: a loaf of bread.

Encryption, on the other hand, could be viewed as a safe deposit box. Whatever you put in there comes back out, as long as you possess the key with which it was locked up in the first place. It's a symmetric operation. Given a key and some input, you get a certain output. Given that output, and the same key, you'll get back the original input. It's a 1:1 mapping.

Another difference apart from what @RV mentioned -
1) A hash function takes an input and provides a short unique representation of the input. Anyone who has access to the hash function can get the same output for the given input.
However, an encryption function needs a secret key to get the output.

2) The purpose of hashing is to get integrity of data. The purpose of encryption is to get confidentiality.