Plants are collectively referred to as flora.
A group of twelve cows is called a "douzaine," which is the French word for a dozen.
Fats, oilds, waxes, and steroids are collectively called lipids
Females are called cows and the males are bulls.
They were called legionnaires collectively
Collectively they are called 'tread'.
A coral
Does.
There are a whole pile of animals that have females called cows:ElephantsBuffaloBisonElkMooseCaribouDomesticated BovineWhalesRhinocerosesWalruses
gate !
Peyer's patches
Multiple atoms linked together are collectively called molecules.