The difference between Advertise and Make known

When used as verbs, advertise means to notify (someone) of something, whereas make known means to announce (some information) generally.

check bellow for the other definitions of Advertise and Make known

Advertise as a verb (transitive, now, _, rare):

To notify (someone) of something; to call someone's attention to something.
Advertise as a verb (transitive):

To give (especially public) notice of (something); to announce publicly.
Advertise as a verb (intransitive):

To provide information about a person or goods and services to influence others.

Examples:

"It pays to advertise."

"For personal needs, advertise on the internet or in a local newspaper."
Advertise as a verb (transitive):

To provide public information about (a product, service etc.) in order to attract public awareness and increase sales.

Examples:

"Over the air, they advertise their product on drive-time radio talk shows and TV news shows."

Make known as a verb (transitive):

To announce (some information) generally.

Examples:

"The decision was made known when it appeared on the evening news."
Make known as a verb (transitive):

To disclose (a secret).

Examples:

"I wouldn't make this known to anyone else, if I were you."