There is a right and wrong way to talk.
Prescriptivism
I need to water my plant.
I fell off the chair.
Verb
painter
truly
Adj + ly = Adv
If lots of people say something the same way, it’s a real part of how they speak
Descriptivism
Her cooking is tasty.
Adjective
The noisy bird called out.
Adjective
quickly
Adj + ly = Adv
direction
V + ion = N
Using a double negative is wrong, and makes you sound unintelligent.
Prescriptivism
The keys are in the bag.
Preposition
I brought my guitar.
Noun
calmness
Adj + ness = N
seasonal
N + al = Adj
Slang is bad English.
Prescriptivism.
They’re talking loudly so they can be heard.
Adverb
I hid under the couch.
Preposition
washable
V + able = Adj
Computer
V + er = N
All languages have a grammar, none are broken.
Descriptivism
Everything is going to be alright.
Verb
I accidentally bought the wrong book.
Adverb
unbelievable
Adj
scorelessness
N