erode- v. to gradually destroy

casual- adj. not formal; having some interest but not a lot ; not serious

unavoidable- n. not able to be prevented or avoided

obligation- n. something that you must do because of a law, rule, promise, etc

division- n. a situation in which different groups, countries, etc., have different opinions, beliefs, or ways of life that separate them from each other

alienate- v. - to cause (someone) to feel that she or he no longer belongs in a particular group, society, etc.

defer –v. to permit someone else to decide or choose something