Basically they both mean the same

Hey Merdan Memetoghli, how are you? Firstly, I would like to congratulate you upon posting such an interesting question on the italki board. In second, you should know that in conversation and in less formal writing, people use either ''sort of'' or ''kind of'' in front of a noun to say that something could be described as being a particular thing. E.g.: ''It's a sort of dictionary of dictionaries.'' E.g.: ''I'm a kind of anarchist, I suppose.'' Furthermore, people also use ''sort of'' or ''kind of'' in front of adjectives, verbs, and other types of word to mean 'a little' or 'in some way', or with very little meaning. E.g.: ''I felt kind of sorry for him.'' E.g.: ''I've sort of heard of him, but I don't know who he is.'' Below you shall find a few more examples for a better understanding: E.g.: ''Is it not sort of could out there? E.g.: ''That was kind of a stupid thing to do, was it not?'' E.g.: ''She kind of smiled at me today.'' E.g.: ''He said it sort of nervously.'' E.g.: ''Are you feeling any better today? - Well, sort of! My throat is no longer sore, but I am still congested!'' Hope that helps! Should you have any further questions, do not hesitate to contact me. I shall be pleased to help.

When speaking they mean the same thing in most cases. https://dictionary.cambridge.org/grammar/british-grammar/speaking/kind-of-and-sort-of https://www.engvid.com/sort-of-kind-of/

Thanks, Sam! That is cool! :)

Also in the UK (older) people use 'sort of' as a 'discourse marker', in this situation it doesn't really have any meaning it's like 'like' or how chinese people use '的话‘ for no reason. I remember my lecturer saying someone was 'sort of dead' he just meant dead.