Difference between Teleology and Deontology:

Teleology: Teleology is the investigation of objectives, purposes and closures. Here center philosophy doesn't make a difference. Goodness and disagreeableness is decide by its outcome. Teleology just spotlight on the objective. 

Deontology: Focusing on rightness or misleading quality of activities with no other thought. Goodness or disagreeableness is decide by its activity. Activity ought to be founded on whether that activity is correct or wrong, instead of dependent on the results of the activity