collection in WordNet English dictionary

1. several things grouped together or considered as a whole
   collection  aggregation  accumulation  assemblage 
   
2. the act of gathering something together
   collection  collecting  assembling  aggregation 
   
3. request for a sum of money
   "an appeal to raise money for starving children"
   solicitation  appeal  collection  ingathering 
   
4. a publication containing a variety of works
   collection  compendium