The difference between Throw up and Upchuck

When used as nouns, throw up means vomit, whereas upchuck means vomit.

Upchuck is also verb with the meaning: to vomit.

check bellow for the other definitions of Throw up and Upchuck

Throw up as a verb:
Throw up as a verb (now, _, colloquial):

To vomit.

Examples:

"The baby threw up all over my shirt."

"That cat is always throwing up hairballs."
Throw up as a verb:

To produce something new or unexpected.

Examples:

"This system has thrown up a few problems."
Throw up as a verb:

To cause something such as dust or water to rise into the air.

Examples:

"The car wheels threw up a shower of stones."
Throw up as a verb:

To erect, particularly hastily.
Throw up as a verb (ambitransitive):

To give up, abandon something.
Throw up as a verb:

To display a gang sign using the hands

Throw up as a noun (colloquial):

Vomit.

Examples:

"We had to scrub the seats for throw up when we left the dog in the car."

Upchuck as a verb (informal):

To vomit.

Examples:

"Joel began to upchuck all over the grandstand."