theme

[1]	subject(-matter) , subject , topic , topic , idea , notion , concept , thesis , text , thread , keynote , gist , core , substance , point , essence
[2]	essay , motif , paper , composition , review , article , story , piece , exposition , study , exercise , monograph , tract , thesis , dissertation , disquisition , treatise
[3]	melodic theme , musical theme , idea
[4]	composition , paper , report
[5]	root , root word , base , stem , radical