The collective noun is a fleet of buses.
There is no standard collective noun for a group of reflections.
The noun 'reflection' is not a standard collective noun.
A collective noun for thread is a spool of thread.
bundle
The collective noun is a blessing of unicorns.
ATP (Adenosine triphosphate) is an energy bundle.
The collective noun is team; a team of astronomers.
The noun 'column' is a collective noun for a column of ants or a column of smoke.
The standard collective noun for players is a team of players.
There is no collective noun specifically for 'red hair', however the collective nouns for hair are a lock of hair and a tuft of hair.
Collective nouns are an informal part of language, Any noun that suits a situation can function as a collective noun. You can use a noun that suits your fancy, such as a head of red hair, a blaze of red hair, an inferno of red hair, etc.
There is no standard collective noun for the noun 'jam'. However, a collective noun is an informal part of language. Any noun that is suitable for the situation can function as a collective noun; for example, a pot of jam, a jar of jam, a jamboree of jam.
The noun 'jam' is a standard collective noun for 'a jamof tarts'.
There is no specific collective noun for a body of water.
The noun body is functioning as a collective noun for a quantity of water.
There is no collective noun for sighted whales. There is a collective noun for whales it is:
herd
pod
gam
A congregation of worshippers.