energy; vigour; vigor; liveliness; spirit; life
cave; hollow; cavity; hollow
solid; strong; sturdy; durable; stout
foreign enemy; outside invader
what is it (that); the meaning of something; what something is about
help; rescue; salvation; solace; (religious) salvation; (Christian) grace
friend and foe; enemies and allies; both sides
to sit; to squat; to assume (a position); to hold steady; to hold still
disadvantage; handicap; drawback; inadvisability; inexpediency; loss
after a long time; for the first time in a while
vitality; energy; dynamism
general; popular; common; typical
amorous feelings; feeling of being in love
to throw open; to leave open
outside world; physical world
establishment; settlement
very low frequency sound; heavy bass sound; low-register sound
natural light; unpolarized light
fluorescent lamp; fluorescent light; person who is slow to react; someone slow on the uptake
shielding; sheltering; screening; shading; masking
sub-; -ous (indicating a low oxidation state); -ite; Asia; Argentina; Arabia; America
electricity; (electric) light
signal; signalling; signaling; traffic light; traffic signal
disassembly; dismantling; factorization; decomposition; resolution; deblocking
reconstruction; reorganization; reorganisation; reconstitution; reconfiguration
megaphone; bullhorn; loudhailer
voice; speech; sound of a voice; sound (e.g. of a TV)
machine; mechanism; instrument; appliance; apparatus
aspect; phase; condition; modality (philosophy)
outward appearance; exterior appearance; outward show; looks
equally (talented, etc.); evenly; neck and neck; nip and tuck
to bury; to embed; to implant
three flat objects (sheets of paper, pieces of cloth, etc.); cutting a fish into two boneless fillets and a piece with the skeleton
ammunition depot; ammunition dump; powder magazine
end (of a street, hallway, etc.)