Affordance is a physical property of an object that suggests how it can be used. For example, a door handle affords opening, while a button affords pressing.

Signifiers are visual representations of an object's function. For example, a label on a button that says "Click here" is a signifier that the button can be clicked.

A door handle is an example of affordance because it suggests how it can be used (to open a door).

A label is an example of a signifier because it visually represents the function of an object (e.g., a label on a button that says "Click here").

Affordance and signifiers are both important in human-computer interaction because they help users understand how to use an interface.

A door handle that is shaped like a hand is a good example of an affordance in a physical environment because it suggests how it can be used (to open a door).

A button that is labeled "Press here" is a good example of a signifier in a physical environment because it visually represents the function of the button (to be pressed).

A button that is shaped like a hand is a good example of an affordance in a digital environment because it suggests how it can be used (to be clicked).

A button that is labeled "Click here" is a good example of a signifier in a digital environment because it visually represents the function of the button (to be clicked).

A handshake, a smile, and a nod are all good examples of affordances in a social environment because they suggest how they can be used (to greet someone, to show happiness, and to agree with someone, respectively).

A handshake, a smile, and a nod are all examples of affordances in a social environment, but they are not signifiers because they do not visually represent anything.

A handshake, a smile, and a nod are all good examples of affordances in a cultural environment because they suggest how they can be used (to greet someone, to show happiness, and to agree with someone, respectively).

A handshake, a smile, and a nod are all examples of affordances in a cultural environment, but they are not signifiers because they do not visually represent anything.

A rock that can be used as a hammer, a tree that can be used as a shelter, and a river that can be used as a source of water are all good examples of affordances in a natural environment because they suggest how they can be used.

A rock that can be used as a hammer, a tree that can be used as a shelter, and a river that can be used as a source of water are all examples of affordances in a natural environment, but they are not signifiers because they do not visually represent anything.