The difference between Go on and Hold on

When used as verbs, go on means to continue in extent, whereas hold on means to grasp or grip firmly.

Go on is also interjection with the meaning: expresses surprise, disbelief or incredulity.

check bellow for the other definitions of Go on and Hold on

Go on as a verb:

To continue in extent.

Examples:

"The meeting seemed to go on forever."
Go on as a verb:

To continue an action.

Examples:

"I think I've said enough now; I'm not sure I should go on."

"He went on walking even when the policeman told him to stop."
Go on as a verb:

To proceed.

Examples:

"He went on to win a gold medal."
Go on as a verb:

To talk about a subject frequently or at great length.

Examples:

"Will you stop going on about your stupid holiday."

"Sam goes on and on about Pokémon."
Go on as a verb:

To use and adopt (information) in order to understand an issue, make a decision, etc.

Examples:

"We can't go on what this map says; it's twenty years out of date."

"I didn't make a decision because I didn't have anything to go on."
Go on as a verb:

To happen .

Examples:

"What's going on?!"

"I really don't want to know what goes on between you and your boyfriend [[behind closed doors]]."

Hold on as a verb:

To grasp or grip firmly.

Examples:

"'Hold on tightly to the railing."
Hold on as a verb (idiomatic):

To keep; to store something for someone.

Examples:

"'Hold on to my umbrella while I ride the roller coaster."
Hold on as a verb (idiomatic):

Wait a short while.

Examples:

"'Hold on while I get my coat."
Hold on as a verb (idiomatic):

To remain loyal.

Examples:

"He didn't give up his fandom when others did; he held on."
Hold on as a verb (idiomatic):

To persist.