The difference between Attend and Pay attention

When used as verbs, attend means to listen to (something or someone), whereas pay attention means to attend.

check bellow for the other definitions of Attend and Pay attention

Attend as a verb (archaic, transitive):

To listen to (something or someone); to pay attention to; regard; heed.
Attend as a verb (archaic, intransitive):

To listen (, ).
Attend as a verb (intransitive):

To turn one's consideration (); to deal with (a task, problem, concern etc.), to look after.

Examples:

"Secretaries attend to correspondence."
Attend as a verb (ambitransitive):

To wait upon as a servant etc.; to accompany to assist (someone).

Examples:

"Valets attend to their employer's wardrobe."
Attend as a verb (transitive):

To be present at (an event or place) in order to take part in some action or proceedings; to regularly go to (an event or place).

Examples:

"Children must attend primary school."
Attend as a verb (intransitive, legal):

To go to (a place) for some purpose (with ).
Attend as a verb:

To be present with; to accompany; to be united or consequent to.

Examples:

"a measure attended with ill effects"
Attend as a verb:

To wait for; to await; to remain, abide, or be in store for.

Pay attention as a verb (idiomatic, intransitive):

To attend; to be attentive; to focus one's attention.

Examples:

"Please pay attention to the danger signs."