Korean Grammar Notes TTMIK
Book 2: lesson 3

And, And then, Therefore, so / 그리고, 그레서

그리고

그리고 has the meaning of “and“ or “and then“ depending on the context. 그리고 can be used for both linking nouns and phrases, but in colloquial situations, 그리고 is more commonly used for linking phrases.

그래서

그래서 has the meaning of “therefore“ or “so“, and just as in English, using this word between two sentences shows a logical relation between sentences.