calamity; disaster; misfortune
if things go wrong; if the worst happens
catastrophe; cataclysm; collapse (of a relationship); breakup; split (friends, lovers, etc.)
historic; historical; traditional
study; diligence; discount; reduction
name; given name; title; fame; renown; pretext
to suddenly understand (esp. on basis of experience or memory); to come to mind; to recall (in a flash); to be reminded of; to call to mind; to think of
library; book storage; stack room; archive (file)
daily visit (of worship); frequent visit
reasonably; fairly; hurriedly; in a rush; approximately; about
literature; books (reference); document
thank you; thanks; much (thanks); very (sorry); quite; really; somehow
extinction; discontinuation; severance; rupture; to become extinct; to cease to exist
worldwide; global; international; world-famous; world-class
explosive increase (in number of pests); (severe) outbreak or upsurge of pests
natural disaster; cataclysm
or something; or something like that; or words to that effect; something or other
nature (of a person); sex; gender; sex (i.e. sexual attraction, activity, etc.); gender; -ty
to get damaged; to get chipped; to be wounded; to get injured; to get hurt (reputation)
handing down (information); legend; tradition; folklore; transmission
vague; ambiguous; shady; disreputable; fuzzy
concrete; definite; specific; material; substantial
to live under another's roof; to become a dependent on; to flatten oneself (against); to lean in close to
erasure; striking off; crossing out; cancellation; deletion
fragment; scrap; piece; shred
to examine; to look up; to investigate; to check up; to sense; to study
so; accordingly; now; then; thereupon; therefore
is something wrong?; what's wrong?; what's the matter?; slightest; mere; trivial
distinction; differentiation; discrimination; discrimination (against people)
yes; indeed; ha!; what?; huh?; sigh
serious; honest; sober; grave; earnest; steady
race; tribe; species; genus; stellar population (i.e. population I, II and III)
positive; assertive; active; proactive; aggressive
to become speechless; to be at a loss for words
flight; running away; absconding; elopement
different (quality, nature); heterogeneous
feature; trait; characteristic; peculiarity; distinction
long (time); protracted; prolonged
materials; data; document
origin; birthplace; descent; lineage; ancestry
exchange (e.g. cultural); interchange; interaction; alternating current; AC
to consider as; to regard (as equivalent); to deem (as); to equate
ground; crust (earth); foundation (building, etc.); base; constituency; power base