differencesmeaningnounsword-choice
Just looking around Google, it appears that "prosthetics" as a plural noun is used in non-technical marketing literature, while "prostheses" is used in technical journals. Is there any difference in meaning?
I already know that "prosthetic" is supposed to be an adjective, but I see it used often as a noun. Is that incorrect?
'[Rahmencurriculum]1' (Ger.) translates to model curriculum (curriculum according to a specific framework) in English. The reference is to curriculum.
It is clearly not curricular framework in OP's case.
[EDIT]
A framework curriculum is a sample/ model built on the basis of guidelines (the 'framework'). Individual institutions can design their curricula on this model, or probably adopt it as such.
A curricular framework (loosely, curriculum framework) is a set of guidelines defining and explaining what a curriculum is required to be like or contain.
It is most likely that "abolition" is the more common form due in large part to its association with the "abolition movement".
France was one of the earlier countries to abolish slavery within its borders, and Société des amis des Noirs was one active group in the movement in France.
The picture on that web page refers to (pardon my French) L'Assemblée Nationale pour L'Abolition de la Traite des Noirs and is dated 1790. Clearly "abolition" was the preferred term in France, and that preference would have transferred to England.
Further, those advocating abolition in England and the US were "abolitionists". It would have been a mouthfull to call them "abolishmentists".
The main reason one might choose "abolishment" over "abolition" (aside from the subtle difference in meaning) is that "abolition" is associated with the movement to end slavery, and thus might be confusing or distracting when used to refer to a different process. But this confusion is not likely in native English speakers, unless the context contributes to the confusion.
Best Answer
I haven't found a distinction between the noun prosthesis and the noun prosthetic, or their plural forms prostheses and prosthetics, when used to mean "artificial body parts." They are synonyms, like dyslexic and dyslectic. Prosthetic(s) is listed in the Oxford English Dictionary with this meaning, with several citations from medical or surgical sources, so I don't see any grounds for considering this usage non-technical or incorrect. Perhaps it could be viewed as an abbreviation of "prosthetic device(s)".
As you've mentioned, these words can also be used in some other ways, and they are not always synonyms in those other senses. Only prosthetic can serve as an adjective. When used as a noun referring to the general field, it seems that prosthetics is used with the suffix -s (analogous to nouns like physics, obstetrics), while prosthesis is used in its singular form (analogous to nouns like synthesis).
Even though they evidently can be used as synonyms, some people do seem to distinguish the meanings of the words; I ran across an example in the following question from the Hinduism Stack Exchange: Artificial Limb Transplant ( Prothesis) in Rig-Veda?
I don't know of course what the original poster's background is, but I think this is evidence showing that some people share your impression about the difference between the two words.