The difference between Attend and Notice

When used as verbs, attend means to listen to (something or someone), whereas notice means to remark upon.

Notice is also noun with the meaning: the act of observing.

check bellow for the other definitions of Attend and Notice

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.

Notice as a noun (mostly, uncountable):

The act of observing; perception.

Examples:

"He took no notice of the changes, and went on as though nothing had happened."
Notice as a noun (countable):

A written or printed announcement.

Examples:

"Shall we post a notice about the new policy?"

"I always read the death notices in the paper."
Notice as a noun (countable):

A formal notification or warning.

Examples:

"The sidewalk adjacent to the damaged bridge stonework shall be closed until further notice."
Notice as a noun (chiefly, uncountable):

Advance notification of termination of employment, given by an employer to an employee or vice versa.

Examples:

"I gave her her mandatory two weeks' notice and sacked her."

"I can't work here any longer. I'm giving notice."
Notice as a noun (countable):

A published critical review of a play or the like.
Notice as a noun (uncountable):

Prior notification.

Examples:

"I don't mind if you want to change the venue; just give me some notice first, OK?"
Notice as a noun (dated):

Attention; respectful treatment; civility.

Notice as a verb (transitive, now, rare):

To remark upon; to mention.
Notice as a verb (transitive):

To become aware of; to observe.

Examples:

"Did you notice the flowers in her yard?"
Notice as a verb (obsolete, transitive):

To lavish attention upon; to treat (someone) favourably.
Notice as a verb (intransitive):

To be noticeable; to show.