probability; likelihood; chances
sudden; abrupt; unexpected; unforeseen
accident; incident; trouble; circumstances; reasons
calamity; disaster; misfortune
encounter; running into; meeting with (e.g. an accident); being confronted with (e.g. a difficulty)
case; occasion; situation; circumstances
lifespan; life; lifetime; life (of a battery, lightbulb, etc.); service life; end of an object's (useful) life
body; physical system; (the) person
technical skill; ability; capacity
aptitude; aptness; suitability
to reach the point where ...; to come to ...; to come to be that ...; to start to ...; to begin to ...
full capacity; all one's ability
character; personality; (fictional) character; character
quantification; expressing in numerical form; conversion to numerical form
by means of; due to; because of; according to
people; men and women; each person; everybody
advancing to the next stage of education; going on to (high school, college, etc.)
finding employment; getting a job
(dance) partner; (work) partner; partner; spouse
choosing; selecting; deciding (on)
credibility; authenticity; confidence; reliability
to be based (on); to be founded (on); to be grounded (on); to be due to; to come (from); to arise (from)
choice; selection; option
to become possible; to become able to (do)
old; former; the old; old things; old times; bygone days
century; era; of the century (e.g. fight of the century)
failure; mistake; blunder
few; little; small (amount); low; scarce; insufficient
different opinion; objection
stochastic; probabilistic
birth (of a person); nativity; creation; formation; one's first birthday
index; index number; indicator; exponent
plan; device; idea; design; contrivance; conception
one person; being alone; being by oneself; being single; being unmarried; by oneself
to rain incessantly; to downpour
light; illumination; ray; happiness; hope; influence; power
surface of the earth; ground surface
clearly (standing out); distinctly; sharply; boldly; in sharp relief