Difference between Engages and Retain

ENGAGES vs RETAIN: VERB

To hire someone for (his or her services).
To hire (an attorney, for example) by the payment of a fee.
To keep in one's service or pay.
To require (a student) to repeat a class or grade because of insufficient educational progress to advance.
To keep in mind; remember.
To keep in a particular place or condition.
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 pay; to employ by a preliminary fee paid; to hire; to engage.
To restrain; to prevent.
A wall built to keep any movable backing, or a bank of sand or earth, in its place; -- called also retain wall.
To keep possession of; continue to have: : keep.
To continue to have as a feature or aspect.

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 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 hold or keep in possession; reserve as one's own.
To keep in mind; preserve a knowledge or idea of; remember.
To hold back; restrain; hinder from action, departure, or escape; keep back; detain.

Plight, Mesh, Lock, Wage, Absorb, Hire, Retain, Prosecute, Take, Occupy, Operate, Engross, Employ, Pursue, Enlist

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

Rent, Plight, Mesh, Lock, Wage, Hire, Retain, Prosecute, Take, Occupy, Operate, Engross, Employ, Pursue, Enlist

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

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.