What's the difference between teeth and tooth, feet and foot?

numerary variants of the nouns that do not conform to the simply addition of -s or -es. read more

Nouns used as attributive adjectives are normally in the singular: shoe store, fingernail clipper, pencil case. read more

Tooth , Teeth. Foot , Feet. Other interesting combinations -Radii , Radius. Datum , Data. wife , wives. formula , formulae. alumnus , alumni and so on. read more

Difference Between Feet and Foot Meaning. Foot can either refer to. the lower part of the leg; measurement of height, length and depth; Feet is the plural form of foot. Number. Feet is the plural form of foot. Foot is the singular form of feet. Measurement. Feet is generally used with plural measurements. read more