Difference between Let Down and Get Down

LET DOWN vs GET DOWN: VERB

Take the first step or steps in carrying out an action
Lower (one's body) as by kneeling
Pass through the esophagus as part of eating or drinking
Put down in writing; of texts, musical compositions, etc.
Lower someone's spirits; make downhearted
Move something or somebody to a lower position
Get off (a horse)
To bring or come down; descend.
To concentrate; attend.
To depress; discourage; fatigue.
To swallow.
To relax and enjoy oneself completely; be uninhibited in one's enjoyment.
To duck or take cover, usually to avoid harm. Commonly used as a caution or warning in the imperative.
To dance with abandon.
To leave the table after dining.
Alight from (a horse)

Lets, Disillusioned, Frustrated, Fail, Dashed, Lowered, Deceived, Deflate, Bummed, Disappointed, Lower, Disappoint, Get down, Take down, Bring down

Deject, Cast down, Set down, Swallow, Dismay, Depress, Demoralize, Unhorse, Dismount, Dispirit, Let down, Get off, Take down, Put down, Bring down

Lop, Base, Drawbridge, Letting, Disillusioned, Lowered, Frustrated, Dashed, Deceived, Deflate, Bummed, Disappointed, Lower, Disappoint, Bring down

Shoot, Descend, Lower, Light, Write down, Deject, Swallow, Dismay, Depress, Demoralize, Unhorse, Dismount, Dispirit, Put down, Bring down

The economy is let down by poor infrastructure.
Gmail is the biggest let down for people with multiple accounts, the old pull down menus was so much cleaner.
We had a big let down early on Friday with Astralis taking down Schalke in a pretty low scoring match.
Every time I let go, I was let down.
If there is ever an occasion when you feel let down then please let us know immediately as we really value your feedback.
Muslims, already grappling with the anguish of their marriage breaking down, feel more let down.
Let down when I received and the customer service was a huge down.
Let alone be let down by a hospital that prides itself of its high standards.
The terrorists and extremists will not let down their guard, and we must not let down ours.
Learn let in, let off, let down, let out, let on.

We have to get down there, get dirty and grab rebounds.
Finally, we can get down to get our task done!
Take a hop west and get ready to get down.
Get Down, Get In Shape, Cardio Music Workout Mix!
If you get down on me, I'll get down on you,.
Totally of this takes preparation to get down it down.
Thao with the Get Down Stay Down live?.
Those numbers need to get down and stay down.
After crawling down the trail on my hands and knees in mud and flagging down an ATV to get down the mountain.
Get down, get funky, get looseand shake your caboose!