agent

As nouns the difference between agent and expert

is that agent is one who exerts power, or has the power to act; an actor while expert is a person with extensive knowledge or ability in a given subject.

As an adjective expert is

extraordinarily capable or knowledgeable.

As a noun agent

is agent (intermediary for certain services, such as for artistic performances or public relations).

As an adjective urgent is

requiring immediate attention.

As nouns the difference between agent and causer

is that agent is one who exerts power, or has the power to act; an actor while causer is someone or something that causes or produces an effect.

As nouns the difference between agent and substance

is that agent is one who exerts power, or has the power to act; an actor while substance is physical matter; material.

As nouns the difference between appointee and agent

is that appointee is a person who is appointed while agent is one who exerts power, or has the power to act; an actor.

As nouns the difference between substitute and agent

is that substitute is a replacement or stand-in for something that achieves a similar result or purpose while agent is one who exerts power, or has the power to act; an actor.

As a verb substitute

is to use in place of something else, with the same function.

As nouns the difference between consignment and agent

is that consignment is a collection of goods to be sent, in transit or having been sent while agent is one who exerts power, or has the power to act; an actor.

As nouns the difference between agent and stakeholder

is that agent is one who exerts power, or has the power to act; an actor while stakeholder is a person holding the stakes of bettors, with the responsibility of delivering the pot to the winner of the bet.

As nouns the difference between fulfiller and agent

is that fulfiller is one that fulfills while agent is one who exerts power, or has the power to act; an actor.

As nouns the difference between agent and requester

is that agent is agent (intermediary for certain services, such as for artistic performances or public relations) while requester is one who, or that which, makes a request.