argument; discussion; dispute; controversy
adaptation; accommodation; conformity
fork; junction; parting of the ways; turning point
madness; craziness; insanity
elimination; erasure; clearing; elimination (of variables)
sphere of action; scope of activity; range of work
beneficial; profitable; useful; helpful; instructive
(an) unknown; unknown number; variable; unknown quantity; not yet known
field; sphere; realm; division; branch
fault; weakness; flaw; crux (of a matter); difficult point; point of contention
low-priced; cheap; inexpensive; shallow (e.g. sympathy); superficial; cheap (e.g. government)
topic; subject; much talked about; topical; in the news
to turn away; to bear off; to veer away; to deviate (e.g. of a conversation); to digress; to go astray
numerator; molecule; member; element
key; lock; key (to a problem); clue
companion; comrade; escort; member of a party; fellow traveller; fellow traveler
in that case; (might not be what was expected or hoped for but) if that's the case
to make a mistake (in); to commit an error (e.g. in calculation); to confuse; to mistake something for something else
supposing; even if; granting that; temporarily; provisionally; for the time being
making use of; application; practical use; operation; handling; steering (esp. a boat)
elaborate; delicate; exquisite
reproduction; duplication; reprinting
elegance; grace; article; item; counter for items (of food, etc.); counter for dishes or courses (at a restaurant)
strength; intensity; strong (e.g. glasses); powerful (e.g. lens); intense (e.g. fear)
pair; the two; both persons; both things
using together (jointly); used at the same time
subjectivity; subject (philosophical); ego; one's personal opinion; one's own idea
kilo-; 1000; kilogram; kilogramme; kilometre; kilometer
to rely on; to depend on; to count on; to turn to (for help)
measurement error; calculation error
to be due to; to be caused by; to depend on; to turn on; to be based on; to come from
to go too far; to go past; to go to extremes; to overdo it
before oneself; in front of one; a bit before reaching (a location); this side (of a location); one's standpoint; one's appearance; skill
carefree; comfortable; at ease; easygoing; happy-go-lucky
other side; opposite side; other party
pipe shaft (in a building); riser shaft
wall of rock; rock cliff; rock face
metre; meter; meter; gauge
severe; harsh; hard; cruel; rigorous
shudder; shiver; trembling with fear