What the mean of "kinda" and "kind of" then How to use these words?

Question

Answer

"kinda" and "kind of" are the same in meaning

kinda= is a slang , and you can't use it in written English . ( just spoken English )
kind of = is formal , and you can use it both in written and spoken English .

Answer

"Kinda" and "kind of" mean the same exact thing.  "Kinda" is just a short, informal, and incorrect way of writing/saying "kind of."

As an adjective, it basically softens, weakens, or reduces what is being said.

"It's kind of red."  It's not exactly red, but more reddish than expected.
"He's kind of upset."  Softer sounding than "he's upset."  It can also mean that he's only a little upset.
"It's kind of hot today."  It's not extremely hot, but a little hot, or hotter than expected.

When "kind" is used as a noun, with "of" following, it just means what it means: a class or type of something.

"Spiders are a kind of arachnid."  This just means that "spiders are arachnids" with the understanding that "spider" is a subclass of "arachnid."

Answer

Kinda= yes

Answer

kinda = sort of = similar to

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