What new word do you look for? Why are “unique” parts related to universal and/or non-universal components?
For analysis of f.z. sample. How can I use a Mac to make Windows parts? What’s the use of a phone to a friend?
What is the use of words like “renew your lost love”?
Why is the US patent system being proprietary?
Is, is, or possesses exclusive right to anything; specifically : proprietor 1 2: what is used, produced, or marketed under exclusive legal right of the inventor or maker; specifically: a drug (as a patent medicine) that is protected by secrecy, patent, or copyright against free competition Name, product, composition, or process of manufacture 3: a business secretly owned by and run as a cover for an intelligence organization This term is often used to refer
to this kind of situation,
What
are incompatible
terms? 2 (Outer equipment, computer programs, etc.) not capable of being used in combination:
“all four prototype camcorders used special tapes and were incompatible with each other”
Your sentence would therefore be:
You cannot use Mac parts in a Windows computer because they are incompatible parts, as with the Apple products.
What is not a word starting with “s”, but it’s the most relevant, appropriate and commonly used one. I could not find the appropriate synonym to meet the “s-word” constraint, too!
Synonyms include :
unsuited, mismatched, ill-matched; ill-assorted; irreconcilable, conflicting, opposing, opposite, contradictory, antagonistic, antipathetic; clashing, inharmonious, discordant;
two persons can be of different views.