Study involves learn. Program language is used for get your idea across. Earn money is used for satisfy need. Heat is not used for satisfy need. Work is used for earn money. Notebook is used for study. Notebook is not used for do jigsaw puzzle on. Study is used for work. Heat is not used for get your idea across. Heat is used for earn money. Study is not used for relieve tension in situation. Notebook is not used for relieve tension in situation.
Earn money is used for satisfy need.