Difference between Keep Back and Retain

KEEP BACK vs RETAIN: VERB

To keep possession of; continue to have: : keep.
To keep in a particular place or condition.
To continue to have as a feature or aspect.
To keep in mind; remember.
To require (a student) to repeat a class or grade because of insufficient educational progress to advance.
To hire (an attorney, for example) by the payment of a fee.
To hire someone for (his or her services).
A wall built to keep any movable backing, or a bank of sand or earth, in its place; -- called also retain wall.
To restrain; to prevent.
To keep in pay; to employ by a preliminary fee paid; to hire; to engage.
To continue to hold; to keep in possession; not to lose, part with, or dismiss; to restrain from departure, escape, or the like.
To keep in one's service or pay.

To hold back; restrain; hinder from action, departure, or escape; keep back; detain.
To hold or keep in possession; reserve as one's own.
To continue in the use or practice of; preserve; keep up; keep from dying out: as, to retain a custom; to retain an appearance of youth.
To keep in pay; hire; take into service; especially, to engage by the payment of a preliminary fee: as, to retain counsel.
To entertain.
=Syn. 2–4. Reserve, Preserve, etc. See keep.
To keep on: continue.
To pertain; belong; be a dependent or retainer.
To keep in mind; preserve a knowledge or idea of; remember.

Do without, Get hold of, Keep from, Take hold, Keep at, Keep apart, Keep down, Concentrate on, Dam up, Hold back, Withhold, Restrain, Hold, Retain, Keep

Sustain, Obtain, Attract, Secure, Lose, Preserve, Maintain, Keep on, Hold back, Keep back, Reserve, Engage, Hold, Continue, Keep

Press down, Do without, Get hold of, Keep from, Take hold, Keep at, Keep apart, Keep down, Concentrate on, Dam up, Withhold, Restrain, Hold, Retain, Keep

Recruit, Maintaining, Uphold, Remain, Obtain, Attract, Secure, Lose, Preserve, Keep on, Keep back, Reserve, Hold, Continue, Keep

Harrisch managed to keep back from the gaping hole, holding his arms out for balance.
King Ethelred earned his nickname for failing to keep back invading Vikings.
Landry: It will hold that whole race black if you keep back.
There is coughing enough to keep back several rebel regiments.
Does a belief in immortality keep back their tears?
Your local library may keep back copies of newspapers.
People will continue to keep back till Allah will put them at the back.
Repeat the previous Keep your head downto improve balance and Remember to keep back foot on the follow through.
Stand back: Trains overhang the tracks by about 3 feet, so keep back.
Keep back from the wi thess stand; causes witness to keep voice up.

Then refold paper in manner to retain material.
Please retain this copyright notice in the script.
He would retain this affiliation throughout his life.
Postal Code please retain all packaging and contents!
The original form is on paper, and so the only way to retain the originalis to retain that same paper form.
The lessee shall retain one set and the lessor shall retain another set.
The ETS will retain electronic copies of the receipts inaccordance with statutory requirements; travelers are encouraged to retain scanned hard copies, as well.
Microsoft commits that it will not retain our data when it is no longer necessary to retain such data.
The draft rule would require creditors to retain information that the staff believes theyalready retain for business and other reasons.
Employers who choose to photocopy and retain these documents should not retain the information in a personnel file.