I guess the first thing to note is that ‘for’ is the kind of old common word that tends to have a lot of meanings. Nevertheless: 1. I think they are not the sa

I guess the first thing to note is that ‘for’ is the kind of old common word that tends to have a lot of meanings. Nevertheless: 1. I think they are not the same senses. In ‘windows subsystem for Linux’, the word means ‘having as a function’ like in the phrase ‘spanner for 1/4 inch hex bolts’. 2. I think the sense in the title is more like ‘to the benefit of’ (or perhaps ‘affecting’ or ‘having the reason’) like ‘lunch for employees’ or ‘supports for the lintel’ 3. I checked a couple of dictionaries and they had the sense but definitions for words like these can be pretty hard to read even for a native speaker.