How do foreign-language borrowings differ from newly coined slang words?

Foreign-language borrowings and newly coined slang words differ primarily in their origins and how they are integrated into a language.

Foreign-Language Borrowings
Borrowings, or loanwords, occur when a language adopts terms from another language, often because of contact with new products, experiences, or cultures. These words are typically assimilated into the borrowing language's existing grammatical and phonological patterns. While some loanwords retain traces of their origin, most become fully integrated over time, such as the German word Kindergarten being treated as a standard English noun.1

Newly Coined Slang
In contrast, slang is typically informal, ephemeral, and often restricted to specific social groups or demographics. Rather than creating many new words, slang often draws from the existing language by giving established terms new, special, or incongruous meanings. While some slang introduces new concepts, much of it functions by providing fresh, satirical, or shocking expressions for established ideas. Unlike the steady adoption of loanwords, slang is characterized by a high turnover rate, with its popularity often tied to social satire or the need for group identification.2345