The most efficient method of learning and retaining words is making mnemonics and using them in real life. Below is an example on how you can use the gre words you learnt.
GRE STUDENT : Individuals who make their abodes in vitreous edifices would be advised to
refrain from catapulting perilous projectiles.
NORMAL PERSON : People who live in glass houses should not throw stones.
GRE STUDENT : Scintillate, scintillate, asteroid minim.
NORMAL PERSON : Twinkle, twinkle, little star
GRE STUDENT: All articles that coruscate with resplendence are not truly auriferous.
NORMAL PERSON : All that glitters is not gold.
GRE STUDENT : Sorting on the part of mendicants must be interdicted.
NORMAL PERSON : Beggars are not choosers
GRE STUDENT : Male cadavers are incapable of rendering any testimony.
NORMAL PERSON : Dead men tell no tales
GRE STUDENT: Neophyte’s serendipity.
NORMAL PERSON: Beginner’s luck
GRE STUDENT: A revolving lithic conglomerate accumulates no congeries of small, green, biophytic plant.
NORMAL PERSON : A rolling stone gathers no moss
GRE STUDENT: Members of an avian species of identical plumage tend to congregate.
NORMAL PERSON : Birds of a feather flock together
GRE STUDENT : Pulchritude possesses solely cutaneous profundity.
NORMAL PERSON : Beauty is only skin deep
GRE STUDENT : Freedom from incrustations of grime is contiguous to rectitude.
NORMAL PERSON : Cleanliness is godliness
GRE STUDENT: It is fruitless to become lachrymose of precipitately departed lactile fluid.
NORMAL PERSON: There’s no use crying over spilt milk
GRE STUDENT: It is fruitless to attempt to indoctrinate a superannuated canine with innovative maneuvers.
NORMAL PERSON : You can’t try to teach an old dog new tricks
GRE STUDENT : Surveillance should precede saltation.
NORMAL PERSON : Look before you leap
GRE STUDENT : The person presenting the ultimate cachinnation possesses thereby the optimal cachinnation.
NORMAL PERSON : He who laughs last, laughs best
GRE STUDENT : Exclusive dedication to necessitous chores without interludes of hedonistic diversion renders Jack a hebetudinous fellow.
NORMAL PERSON : All work and no play makes Jack a dull boy.
GRE STUDENT : Where there are visible vapours having their provenance in ignited carbonaceous materials, there is conflagration.
NORMAL PERSON : Where there’s smoke, there’s fire!
By the above sentences you can learn atleast 40 words.Hope it helps to increase your vocabulary and mnemonic building skill.