Difference between Muster Up and Bear Up

MUSTER UP vs BEAR UP: VERB

Sinewless, Good part, Unstrength, Strengthful, Fortitude, Revigorate, Strength, Innerve, Sthenic, Sthenia, Courage, Come up, Rally, Summon, Muster

Fall upon, Overhale, Bring forth, Eat into, Outbrave, Take hold, Keep at, Againstand, Drag up, Overgo, Concentrate on, Keep down, Blow over, Bear with, Upbear

Pluck up, Sinewless, Good part, Unstrength, Strengthful, Fortitude, Revigorate, Strength, Innerve, Sthenic, Sthenia, Courage, Come up, Rally, Summon

Fall upon, Overhale, Bring forth, Eat into, Outbrave, Take hold, Keep at, Againstand, Drag up, Overgo, Concentrate on, Keep down, Blow over, Bear with, Upbear

How do we muster up the courage to turn down new invitations while still keeping friends close?
Congressmen can muster up against the war in Iraq is tosay let Congress vote on it.
But can they muster up some points on offense against the very stingy Steeler defense?.
Maybe he could even muster up the courage to explain his feelings by then.
Tom Hanks was able to muster up a handful of anecdotes for print.
But TODAY all Old John could muster up was attacks on Obama.
He used pathos to muster up superior performances from ordinary citizen soldiers.
Bill right and muster up strength for him.
You better muster up some will to fight.
Can we pull ourselves together, muster up our civic pride, collective chins up, and move forward?.

These highways will not bear up under the strain, and they cannot be dispensed with.
America, as Americans bear up under the burdens of untruth, uneasiness, and unhappiness.
Inhabitants thereof are dissolved: I bear up the pillars of it in.
That continued reliance, however, does not bear up well under scrutiny.
An undergoing stomach, to bear up Against what should ensue.
The word perseverance means endurance, steadfastness, to persist in, to continue, to stand firm, to put up with, and to bear up bravely.
Beloved, Assurance will lift up and bear up the heart under all sorrowes.
Waft, swim, be buoyed up; bear up, buoy up; spread, nate.
To bear up to, to tend or move toward; as, to bear up to one another.
These include to bear down, to bear off, to bear on, to bear out, to bear up, and to bear with.