Hi, Tony C,
I agree with David that, in the context of a sentence and particularly in the singular, the phrases he proposes will sound better.
It is also true that in the plural we can find phrases like loan requirements (which will generally refer to the conditions to be met to obtain a loan) or loan needs. These phrases, where "loan" is a noun being used attributively, are more usual as titles or items.
"Noun A + noun B" phrases can usually be broken down into phrases of the type "noun B + preposition + noun A." Depending on the preposition and the nouns involved, different semantic relationships can be established:
- Chair leg (= leg of a chair) (actual possession: the chair has a leg and the leg forms part of the chair)
- Exam date (= date of the exam) (referential possession: the exam has a date but the date does not form part of the exam)
- Tennis game (= game of tennis) (tennis: specific, defining noun + game: general noun)
- London citizens (= citizens of London) (origin)
- Ship captain (= captain of the ship) (ship: the thing owned + captain: the owner)
- Ship size (= size of the ship) (size is a quality of ship)
- Ship sailing (= sailing of a ship) (ship is the object of sailing)
- Bird flight (= flight of a bird) (bird is the subject of flight)
Note: I have taken most of the examples and semantic descriptions above from English Prepositions Explained, Revised edition, by Seth Lindstromberg.