security; guarantee; collateral (e.g. mortgage)
to discharge (e.g. effluent)
to be ill; to suffer from; to worry about; to be concerned about; to have trouble doing ...; to be unable to ...
friendly army; friendly troops; allied army
space; air; midair; (from) memory; (by) heart
drawing; picture; diagram; sight; scene
to be placed on; to be set on; to be piled on; to appear (in print); to be mentioned; to be recorded
addition; annexation; appendage
fixed; settled; constant; definite; uniform; regularized
one by one; each; every; at intervals of
(one's) current position; current location; present position
location information (as used by location-based services, e.g. GPS position)
absolutely essential; indispensable; vital; critical
obstacle; impediment; hindrance; handicap; impairment; disability
outbreak; spring forth; generation (e.g. of power or heat); genesis; ontogeny; development of complex multicellular structures from cell(s) in a simple state
reflection (light, image, situation, attitude, etc.); reflecting; influence; application (e.g. of an update)
official; formal; formula (e.g. mathematical); official (social media) account (of a company, organization, etc.)
another thing; other things; another man's property
to hang; to suspend; to lower; to reduce; to demote; to move back
duplication; repetition; overlapping; redundancy; restoration
normal; usual; ordinary; everyday
blank space (in documents); vacuum; blank; void
to escape (disaster, death, etc.); to be saved from; to be rescued from; to avoid (e.g. punishment); to evade (e.g. responsibility); to avert
brush tip; first on a list; head; chief
condition; assumption; intention; intent; premise (in logic)
measure; step; countermeasure; counterplan; countermove; strategy
difficult to ...; hard to ...
serious; important; significant; grave; weighty
defect; fault; flaw; deformity; deficiency; shortage
program (of events, music, etc.); programme; program (booklet); brochure; (computer) program; programming
to go through formalities
presence (e.g. of an observer); observation; observer; trading session (at an exchange)
ill will; spite; bad meaning; mala fides; bad faith; malice
in accordance with; according to; as X, then Y (e.g. as we age we gain wisdom, as wine matures it becomes more valuable, etc.)
change; alteration; modification
safety administration; safety control; safety management
process; procedure; sequence; protocol; instruction