There is no collective noun specifically for towels, you use a collective appropriate for the circumstance. Some examples are 'a stack of towels', 'a row of towels', 'a basket of towels', or 'an array of towels'.
There is no standard collective noun for the noun 'pillow', however, any noun suitable to the situation can be used as a collective noun, such as a 'pile of pillows' or a 'plethora of pillows'.
Shoal is a collective noun. It is the collective noun for fish. A shoal of fish.The collective noun is a mint of candies
There is no standard collective noun for a group of reflections. The noun 'reflection' is not a standard collective noun.
No, the noun lumber is not used as a collective noun. The collective noun for lumber is a stack of lumber.
No, the noun farm is not a collective noun.
There is no standard collective noun for the noun 'pillow', however, any noun suitable to the situation can be used as a collective noun, such as a 'pile of pillows' or a 'plethora of pillows'.
Shoal is a collective noun. It is the collective noun for fish. A shoal of fish.The collective noun is a mint of candies
The towels of the hotel = the hotel's towels.
The sentence "the towels of the hotels" contains no possessive noun. If however you rewrite the sentence as "the hotels' towels" then the possessive noun is hotels'.
There is no standard collective noun for a group of reflections. The noun 'reflection' is not a standard collective noun.
No, the noun lumber is not used as a collective noun. The collective noun for lumber is a stack of lumber.
No, the noun farm is not a collective noun.
The collective noun is a series of explosions.
No, the noun land is not a collective noun. However, any noun can function is as a collective noun in a suitable context without being a designated collective noun.
No, the noun 'kin' is not a collective noun.
No it is not a collective noun.
No, games is not a collective noun. The collective noun for games is 'a compendium of games'.