frequency (esp. of waveforms)
source (of a transmission, broadcast, etc.); point of origin
sensitive; alert; aware; susceptible
to start; to begin; to challenge; to pick (a fight); to set (traps); to plant (explosives)
switch; switch; points; switch (from one thing to another); change
touch; touching; being involved in; touch (of a painter, pianist, etc.); style (of writing, drawing, etc.); tag
center half; centre half; channel; Order of the Companions of Honour (British order)
European Community; EC; e-commerce; electronic commerce; emergency contraception; engineering constructor
to let out; to utter; to issue; to send; to leave; to depart
watch; guard; lookout; surveillance; watchman; sentinel
to excel at; to be proficient at; to grow old; to ripen; to rise high (e.g. of the sun)
retaining warmth; keeping heat in; heat insulation
leaving (a light, TV, etc.) on; leaving engaged (e.g. a key in a lock)
pocket money; spending money; pin money; allowance
laptop (computer); notebook (computer)
notebook; copy-book; note; noting down; (musical) note; laptop (computer)
luxury; extravagance; to live in luxury; to indulge oneself; lavish (use of something); abundant
luxury; extravagance; to live in luxury; to indulge oneself; lavish (use of something); abundant
loafing; indolent; lazy; hey
video camera; video camcorder
desk lamp; floor lamp; standard lamp
standard item; usual thing; (a) classic; basic item (with stable demand); staple goods
disassembly; dismantling; decomposition; resolution; factorization
combination; assortment; matching (in a contest); pairing; combination
to wash; to cleanse; to inquire into; to investigate; to purify (one's heart); to lave (e.g. shore)
pot (esp. teapot, coffee pot); vacuum bottle; thermos flask
to replace; to substitute; to switch; to move (something); to transfer
carrying (on one's person or in the hand); mobile phone; cell phone
et cetera; etc.; and the like; and so forth
currently popular; in fashion; trendy
horsepower; hp; energy; vitality; horse-drawn cart
to gouge out; to cut out; to scoop out; to bring to light; to reveal
timer; time switch; stopwatch; time keeper; self-timer; (delay) timer
hidden camera (for illegal or immoral purposes)