And "affect" is also a noun, although rarely used. affect: the conscious subjective aspect of an emotion considered apart from bodily changes; also

And "affect" is also a noun, although rarely used. affect: the conscious subjective aspect of an emotion considered apart from bodily changes; also : a set of observable manifestations of a subjectively experienced emotion <patients … showed perfectly normal reactions and affects — Oliver Sacks> (http://www.merriam-webster.com/dictionary/affect http://www.merriam-webster.com/dictionary/affect) But it's still a good rule of thumb.