One Word Substitution : Set 23

A group[p of applauders i.e. paid to clap	Claque
A group of islands	Cluster
A group of worshipers	Congregation
A small fleet of boats	Flotilla
A number of fish caught (in net) caught at one time	Haul
A number of ruins, stones	Heap
Of young pigs, dogs at birth	Litter
A group of people who are the same in some way	Posse
A section of hair	Lock
A large number of fish swimming together	Shoal
A sequence of similar items	String
A flies or locusts, bees ,ants	Swarm
A framework of rafters, posts and bars	Truss
A large crowd of people	Throng
A group of dancers, artists or acrobats	Troupe
Of abusive invectives	Torrent
Of grass ,hair	Tuft
In questions	Barrage
The study of sounds	Acoustics
The science of soil management and the production of field crops	Agronomy
Chemistry in ancient times	Alchemy
Cultivation of tress and vegetables	Arboriculture