Warm Clothes Felt Cold Express I Action Wet

So that is used to express the purpose of an action: 'We took our umbrellas so that we wouldn't get wet.'

So is used to express the result of an action: 'I'd forgotten to take my umbrella so I got wet.'

Use so-called when you want to suggest that the name that has been given to something is incorrect or not suitable: 'I went to see the playwright's so-called masterpiece and was very disappointed by it.'

To introduce the name by which something is generally known, use be known as, be referred to as or be called: 'The distance that light travels in a year is called a light year.' 'Zaire was formerly known as the Congo.'

Use so + adjective (1) to mean 'to such a high degree or great extent':

'I was so tired that I fell asleep on the train.' 'I didn't expect the hotels to be so busy.'

(2) to express strong personal emotion: 'It was very kind of you to help me. I'm so grateful.'

Otherwise, use very/extremely + adjective: 'She was very tired and found it difficult to stay awake.'