explaining an idea; exposition; explanation
to be angular; to jut out; to be pointed; to be formal; to be stiff; to be ceremonious
divergence; ramification; bifurcation; branching off
indeed; really; absolutely; truly; actually; very
thorough; exhaustive; complete
detailed knowledge; finely detailed
troublesome; annoying; complicated
great person; eminent figure
thesis; essay; treatise; paper; article
to discuss; to talk about; to argue; to dispute; to take into consideration; to make an issue of
established theory; accepted opinion; accepted explanation
early (days); initial stage; initial
evaporation; disappearance (of people intentionally concealing their whereabouts); unexplained disappearance
stratum; geological formation; layer; bed (coal, gravel, etc.)
fall; sinking; surrender; capitulation
high and low; rise and fall
aquatic products; fisheries
fossil; petrifaction; petrification; fossilization
containing (an ingredient, mineral, etc.)
sedimentation; deposition
protuberance; bulge; protrusion; rise; uplift; upheaval
contacting; (making) contact; connection (with a train, bus, etc.); joining (a railway line, etc.); connection (between matters, incidents, etc.); relation
to make a mistake (in); to commit an error; to be wrong; to be incorrect; to mislead; to misguide
rich (in flavor, color, smell, etc.); thick; very likely; highly possible; passionate; hot
boiling; seething; becoming heated (e.g. debate); excitement; soaring (prices); shooting up
condition; situation; prospects
prosperous; flourishing; popular; widespread; active; lively
sudden rise to power; sudden rise in prosperity
(teacher's) platform; podium; dais
publicity; advertisement; advertising; propaganda
to press; to oppress; to dominate; to overwhelm