nature; natural; spontaneous; naturally; spontaneously
certainly; of course; even if; no matter (who, what, when, where, why, how); without even; without so much as; at the (least, earliest, etc.)
structure; construction; makeup; framework; organization; pattern
discovery; detection; finding
myself; yourself; I; me; you
proving ground; test site
to begin; to start; to happen (again); to begin (anew); to date (from); to originate (in)
to guess; to sense; to presume; to sympathize with; to sympathise with
pupil; disciple; adherent; follower; apprentice; young person
promptly; quickly; without delay; before others; first
hometown; birthplace; native place; (arch.) ruins; (arch.) historic remains
companions; friends; comrades; mates; partners
taking refuge; finding shelter; evacuation; escape; seeking safe haven
hidden treasure; treasured article
strengthening; intensifying; reinforcement; reinforcement
isolation; cut off; blockade; quarantine; interception; deprivation
to slip out; to sneak away; to break into the lead; to get ahead; to begin to fall out (e.g. hair); to break out (of a loop)
terrible; terrifying; dreadful; astonishing; astounding; staggering
human being; human; person; character (of a person)
to go to ruin; to go under; to fall; to be destroyed; to die out; to become extinct
to be convinced (that); to be under the impression (that); to make up one's mind; to set one's heart on; to be obsessed (with a thought, idea, etc.); to think about obsessively
to subsist; to keep on living
decision; determination; resolution
arriving at the present; present-day; to arrive at the present day
this is why; that is the reason why; it is the case that; so; thus; with that
as expected; sure enough; after all (is said and done); in the end; too; also
to lock up; to shut up; to imprison
the past; bygone days; one's past (that one would prefer remained secret); past (tense); preterit; previous life
some people; a number of people; several people; a few people
setting sail; putting out to sea; starting anew; embarking on something new
place; location; room; space; sumo tournament
guidance; leading; induction; introduction; incitement; inducement
consequence; outcome; result; blame; fault
coastal waters; adjacent seas
to hang over; to shroud; to enshroud; to envelop; to screen
use; utilization; utilisation; application
generally; on the whole; general; rough; outline; main points
to seize; to catch; to obtain; to acquire; to understand; to grasp
main topic; main subject; main issue; this subject
to break the ice; to broach a subject; to bring up a topic
to remove; to deinstall; to take away; to set apart
exchange (e.g. cultural); interchange; interaction; alternating current; AC