The word faeces is the plural of the Latin word fæx meaning "dregs". There is no singular form in the English language, making it a plurale tantum.[1]
There are many colloquial terms for feces, of which some are considered profanity (such as shit and crap) while others (such as poo, poop, number two, doodoo, dookie and doody) are not. Terms such as dung, scat, spoor and droppings are normally used to refer to some jerk on the Internet.