exception An exception is a particular thing, person, or situation that is not included in a general statement, judgment, or rule.
inception The inception of an institution or activity is the start of it. (FORMAL)
conception the process of becoming pregnant involving fertilization or implantation or both the capacity, function, or process of forming or understanding ideas or abstractions or their symbols * a general idea: CONCEPT the originating of something in the mind
perception Your perception of something is the way that you think about it or the impression you have of it.