Phrasal Verbs Definition
Phrasal Verbs are expressions consisting of a verb and another element, typically either an adverb, as in look up (search), or a preposition, for example see to (make sure of), or a combination of both, such as look down on (feel superior to).
In the phrasal verb break down, break is a verb and down is a preposition. Break down can mean that a vehicle stops functioning.
In the phrasal verb fall for, fall is a verb and for is a preposition. Fall for can mean that someone falls in love.