Both verbs are used when something is elevated. The main difference is that raise is a transitive verb (followed by an object), but rise is not (no object).
  • Something raises something.
  • Something rises.
Notice that:
  • raise is irregular: raise, raised, raised
  • rise is regular: rise, rose, risen

RAISE (regular, transitive)
raise, raised, raised, raising

If you lift or increase something with raise, this means we take something from a lower level and bring it to a higher one:
  • The government plans to raise the age of retirement from 65 to 67.
  • If you have a question, please raise your hand.
  • Mary raises her voice when she's angry.
  • He raised his eyebrows, as if surprised.
  • They have raised their prices every year since they were founded.

RISE (irregular, intransitive)
rise, rose, risen, rising

If something is increased with rise, it does it on its own, there is no need for an additional force. Notice that this is not always a physical movement, sometimes we are simply talking about something increasing:
  • If it doesn't stop raining, the river will rise and overflow.
  • Hot air rises.
  • John rose from his chair when Mary walked in.
  • Jane has risen in her company very quickly and is now CEO.
  • Prices are rising all the time.

To compare meanings, here are some examples with raise and rise in the same sentence:
  • We raise the flag when the sun rises, and we lower it when the sun goes down.
  • Whenever our commanding officer comes in, we rise from our chairs and raise our hands in salute.
  • The helicopter rose into the air, raising the survivors out of the water.

Important! When talking about payments and salaries, there is a bit of confusion with the nouns rise and raise. In British English a (pay) rise is an increase in salary. In American English, the word is a (pay) raise.
  • Did you get a 4% pay rise last year? (BrE)
  • My boss said he's giving me a pay raise next month. (AmE)

Source: https://www.englishclub.com

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