Difference between Bonanza and Goldmine

BONANZA vs GOLDMINE: NOUN

By extension, anything which is a mine of wealth or yields a large income or return.
The point at which two mother lodes intersect
In mining, a rich mine or vein of silver or gold; hence, anything which is a mine of wealth or yields a large income.
Hence—2. A mine of wealth; a profitable thing; good luck: as, to strike a bonanza.
A term in common use in the Pacific States, signifying a rich mass of ore: opposed to borrasca.
A source of great wealth or prosperity.
A rich mine, vein, or pocket of ore.
A sudden happening that brings good fortune (as a sudden opportunity to make money)
An especially rich vein of precious ore

Bountiful, Mann, Pail, Wealth, Deal, Godsend, Upswing, Manna, Pittance, Bargain, Boon, Windfall, Manna from heaven, Boom, Goldmine

Coal mine, Gold, Colliery, Coalmine, Gem, Trove, Treasure, Goldfield, Lode, Mine, Mother lode, Treasure trove, Manna from heaven, Boom, Bonanza

Mother lode, Extravaganza, Bountiful, Mann, Pail, Wealth, Deal, Godsend, Upswing, Pittance, Bargain, Boon, Windfall, Boom, Goldmine

Wasteland, Holy grail, Goldrush, Treasure chest, Coal mine, Gold, Gem, Trove, Treasure, Goldfield, Mine, Mother lode, Treasure trove, Boom, Bonanza

First of all, Bonanza is your typical marketplace.
Gala Casino ups the ante with Bonus Bonanza!
On the highway to heaven, a bonanza awaits.
The deal also facilitates a potential economic bonanza.
Boat producers in Seaside enjoy a similar bonanza.
Songwriters got screwed by the Spotify equity bonanza.
Bonanza in between H and Martin Luther King.
What is an antonym for the word bonanza?
RUMOR: There were lyrics to the Bonanza theme.
The bonanza comes just weeks following last month's successful Darts Bonanza organised by Upanga Darts Club.

For businesses, Snapchat is a goldmine of opportunities.
This forum has been a goldmine of info.
Seriously, Europe is a goldmine for classical music.
Genuine feedback is the goldmine of people analytics.
Seminars can be a goldmine of useful information.
Newsletters can be a goldmine when done right.
Thank you your cheat sheet is a goldmine!
Where did this goldmine of information come from?
USP Electronic Research Repository The western Pacific: goldmine of biodiversity Thaman, Randolph R. and Fong, Teddy (2009) The western Pacific: goldmine of biodiversity.
Goldmine training is required before requested access to Goldmine.