 So and such, the difference is in usage. Do you confuse the two words so and such? This article will explain the differences clearly with helpful examples. To learn this English grammar, let's look at the meaning of so and such. So plus adjective or adverb, means very, extremely or to some high degree or level. For example, Sally is so nice, I really like talking to her. Such plus adjective phrase, used to show a high level of importance. For example, Sally is such a nice person, I really like talking to her. Other uses. So can be used with the determiners much, many, little, and few, to make these words stronger. In English grammar, a determiner is a word that comes before a noun, to show how the noun is being used. For example. Bill has so much responsibility at work. I feel bad for him, he works overtime every day. He has so little free time.