chunk in WordNet English dictionary

1. a compact mass
   "a ball of mud caught him on the shoulder"
   ball  clod  glob  lump  clump  chunk 
   
2. a substantial amount
   "we won a chunk of money"
   chunk 
   

1. group or chunk together in a certain order or place side by side
   collocate  lump  chunk 
   
2. put together indiscriminately
   "lump together all the applicants"
   lump  chunk