Difference between Come and Happen

COME vs HAPPEN: NOUN

Reach a state, relation, or condition
Have a certain priority
Cover a certain distance
Move toward, travel toward something or somebody or approach something or somebody
Be received
Come from; be connected by a relationship of blood, for example
Happen as a result
Be found or available
Come to pass; arrive, as in due course
Exist or occur in a certain point in a series
Enter or assume a condition, relation, use, or position
Extend or reach
Develop into
To be the product or result
Come under, be classified or included
Be a native of
Come forth
Come to one's mind; suggest itself
Reach a destination; arrive by movement or progress
Proceed or get along
Add up in number or quantity
Experience orgasm

To make a casual call.
To meet with; to fall or light upon.
To take place; to occur.
To come by chance; to come without previous expectation; to fall out.
Used with an infinitive to make polite requests.
To come to pass.
To come about as a consequence; result.
To be the fate; become.
To encounter something by chance.
To come or go casually; make an appearance.
Used with the impersonal subject it and a following clause or infinitive to indicate the occurrence of a usually unexpected or chance event.
To have the fortune (to be or do something); be in a situation or position (to be or do something).

Come from
Suggest itself
Come to one's mind
The furniture comes unassembled"
Arrive, as in due course
Come to pass
Arrive by movement or progress
Reach a destination
To measure up to in kind or quality
Reach or enter a state, relation, condition, use, or position
The thick white fluid containing spermatozoa that is ejaculated by the male genital tract

Possibly; perhaps.
To occur by chance; occur unexpectedly or unaccountably; in general, to occur; take place.
To chance; be by chance or unexpectedly: as, he happened to be at home.
Fortunate; happy; blessed.
(Santayana)
Come into being
Become reality
Come upon, as if by accident
Meet with

Get along, Issue forth, Total, Amount, Number, Fare, Hail, Derive, Descend, Fall, Occur, Follow, Arrive, Do, Get

Come about, Pass off, Bechance, Go on, Take place, Hap, Encounter, Chance, Pass, Bump, Hit, Find, Befall, Materialize, Occur

Bring, Come up, Come in, Total, Amount, Number, Fare, Hail, Derive, Descend, Fall, Occur, Follow, Arrive, Get

Recur, Unfold, Come, Come about, Go on, Take place, Hap, Encounter, Chance, Pass, Bump, Hit, Find, Materialize, Occur

Enhancement, an LED animation will come into effect.
May every single wish of yours come true.
But the greater rewards come with added risk.
They come out moist and delicious every time.
Not many pimps and dope dealers come forward.
And when we come into this world, we come into this world with an incredible possibility that goes way out into the future.
Coolest thing to come to Utah in a long time come with word counts and reading time estimates, you.
It is possible that in some cases, the shapes could come apart, allowing the small balls inside them to come out.
Here, in this post, we come up with several methods that you can try to come out of this annoying problem.
Come explore the heart of Portland and the unique opportunities that come from living here.

It basically describes all the horrible things that happen in hell and all the awesome things that happen in heaven.
Make sure it is clear what will happen when the rules are followed and what will happen when they are not.
And if it can happen to Jennifer Love Hewitt, it can happen to you.
Richard Stamp of London had one of the worst things that can happen to a man happen to him, he lost his fucking penis.
Although this used to happen regularly under the Supporting People programme, it does not happen regularly now.
And that again will not happen immediately, but could happen over the next year or so if his conviction is upheld.
That way at least you know what will happen should something similar happen in the future.
Meaning: If you want something to happen, make it happen.
Some want it to happen, some wish it would happen, other make it happen.
Yet assumptions have a major impact on what individuals expect will happen, can happen, or should happen.