(practical) application; putting to practical use; applied (e.g. physics, linguistics, research)
simple; simplified; easy; plain
barrier; protective wall; obstacle; hindrance; imaginary shield that gives one invincibility or immunity
he; she; that person; that; that one; that thing
to take in; to bring in; to capture (e.g. image); to import; to win over; to please
to obtain; to get; to procure; to win; to secure
to make matters worse; besides; what's more; in addition; on top of that
contagious disease; communicable disease; transmissible disease; infectious disease; epidemic
daily (living) necessities; necessities; essentials for life
to go around; to make a circle around; to surround; to circle; to come around (of a season, anniversary, turn, etc.); to return
fight; dispute; feud; competition; contest; rivalry
spread (e.g. of a disease); rampancy; infestation; proliferation; being widespread
(death from) starvation; starving to death
event; affair; incident; case; plot; trouble
how; in what way; how (much); to what extent; however (much); no matter how
severe; harsh; hard; cruel; rigorous
deep (hole, forest, snow, etc.); dense (e.g. fog); thick (e.g. weeds, woods); close (e.g. relationship); deep (involvement); intense (e.g. longing, flavor); severe
regret; repentance; remorse
sense; idea; desire; concern; attention; care
grave; sad; mournful; sorrowful; pensive
pitiful; heartbreaking; heartrending; touching; tragic; sad
(playground) slide; (ship) launching platform; sliding ways; slipway
chain (bicycle, measuring, tire, etc.); chain (store, hotel, etc.)
one side; one party; the other side; one (of a pair); the other (one); the mate
to be disconnected; to get out of place; to miss the mark; to get it wrong (e.g. guess, expectation); to be removed; to be excluded
once; before; formerly; never yet; never before; first time
to open out (of a view, scenery, etc.); to spread out; to improve (of luck, prospects, etc.); to get better; to develop (of a town, civilization, etc.); to become civilized; to be sensible
river; stream; River; the ... river
underground; below the ground; world of the dead; the grave; underground (activities, movement, etc.); secret
to separate (by distance, time, etc.); to isolate; to interpose; to have between; to alienate; to estrange
to get torn; to tear; to rip; to be broken off (of negotiations, etc.); to break down; to collapse
place; spot; address; district; area; one's house; point
to wet; to moisten; to dampen; to soak; to dip
under (guidance, supervision, rules, the law, etc.); under (a flag, the sun, etc.); beneath; with (e.g. one blow); on (the promise, condition, assumption, etc. that ...); (someone's) side
pitch-dark; pitch-black; completely dark; very bleak (future); utterly hopeless
subterranean drain; culvert; conduit
above ground; on the ground; earth's surface; this world; this earth