two-digit number; "tens" column; two digits; double figures
multiplication table; times table
affliction; hardship; difficulty; suffering; trouble
going side-by-side; going abreast; running concurrently; occurring at the same time; keeping pace with
evaporation; disappearance (of people intentionally concealing their whereabouts); unexplained disappearance
coagulation; freezing; solidification
sublimation; sublimating (an emotion, impulse, etc.); channelling; diverting
to melt; to thaw; to fuse; to dissolve
to harden; to solidify; to become firm; to become certain; to gather (together); to assemble
terrible; dreadful; amazing (e.g. of strength); great (e.g. of skills); to a great extent; vast (in numbers)
atmosphere; air; magnanimity; generosity
rough (estimate, manner, etc.); crude; broad; loose; careless (work)
clanging; banging; throbbing (headache); pounding; fully; vigorously
throwing in; inserting; investment; commitment (of funds, personnel, etc.); launching (a product into the market); introduction
composition; synthesis; composite photo; (function) composition
heating power; thermal power; firepower
to load (a gun, etc.); to charge; to put into (e.g. emotion, effort); to include (e.g. tax in a sales price); to hang over; to shroud
combustibility; inflammability; combustible; inflammable
gas; vapour; vapor; gaseous body
go that far; to that extent
great difference; big difference; wide margin
to join together; to combine; to join up
look; glimpse; apparently; seemingly; (arch.) first meeting
deadlock; stalemate; impasse; dead end
any more; any further; any better; any longer
to examine; to look up; to investigate; to check up; to sense; to study
convenient; handy; useful
something or other; this and that; one thing this, another thing that; blah blah blah
to bend one's head slightly to one side; to look slightly doubtful
rate; ratio; comparatively; contrary to expectations
falling lightly (e.g. snow, petals, confetti); fluttering; flickering; twinkling; appearing and disappearing; catching glimpses
to be effective; to be fruitful; to be worthwhile; to be worth; to be rewarded; to pay off
action; movements; motions; bearing; behaviour; behavior
meticulous; careful; discreet; scrupulous; prudent