Such or so?
Such is a determiner; so is an adverb.
They often have the same meaning of ‘very’ or ‘to this degree’:
Those are such good chocolates.
Those chocolates are so good.
We use such + noun phrase and so + adjective or adverb phrase:
She is such a great cook.
Not: She is so great cook.
That was so unpleasant. (so + adjective)
Not: That was such unpleasant.
Why do you drive so fast? (so + adverb)
Not: Why do you drive such fast?
so + adjective
such + noun phrase
You’re so kind.
He’s such a kind person
It was so hot we couldn’t work.
November was such a cold month.
So but not such can also be used in front of much, many, little, few to add emphasis:
So much food was wasted every day.
Not: Such much food was wasted …
In those days there were so few doctors in our area.
Not: … there were such few doctors …
We use such, not so, before a noun, even if there is an adjective before the noun:
They’re such snobs! They won’t speak to anyone else in the village.
Not: They’re so snobs …
Those are such cool shoes. Where did you get them?
Not: Those are so cool shoes.
We use such, not so, before a noun phrase with the indefinite article a/an:
This is such a wonderful kitchen!
Not: This is a so wonderful kitchen!
We use so, not such, before adjectives:
Thank you. You’re so kind.
Not: You’re such kind.
We use so, not such, before adverbs:
She always dresses so elegantly.
Not: She always dresses such elegantly.https://dictionary.cambridge.org/ru/%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B0/%D0%B1%D1%80%D0%B8%D1%82%D0%B0%D0%BD%D1%81%D0%BA%D0%B0%D1%8F-%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B0/such-or-so