Some English words can change their word class ........................................................ their form. Thus, they can function as nouns (e.g. a mother) or as verbs (to mother som

Some English words can change their word class ........................................................ their form. Thus, they can function as nouns (e.g. a mother) or as verbs (to mother somebody) without any affixes or inflections. Such change of a word class without any derivative means is called conversion.