loom, mechanism, machine, airplane, opportunity, potency, efficacy, occasion
機 centers on a structured device that transforms or enables action: a machine, mechanism, or loom. Its extended senses of opportunity, potency, and occasion grow from the idea of a mechanism that creates a favorable moment or effective result.
機 combines 木 (wood) with 幾, which likely contributes the sound and the idea of subtlety or small triggers. Historically, it referred to a wooden loom mechanism, later extending to machines and abstract triggers.
A wooden 木 frame with a complex mechanism 幾: picture an old wooden loom with many small moving parts. That loom is a machine, and every machine creates opportunities to get work done.
For キ, imagine a key turning in a machine: key -> キ, and the key starts the mechanism.
chance; opportunity
function; facility; faculty; feature
engine
chance; opportunity; occasion
machine; mechanism
crisis; critical situation; emergency; pinch
device; equipment; machinery; apparatus
airplane; aeroplane; plane; aircraft
model (of machine, device)
standing by; awaiting an opportunity; being on alert
fuselage; airframe
mechanism; machinery
maneuver (usu. of military force); manoeuvre
motive; incentive
humour; humor; temper; mood; spirits
organic
secrecy; highly classified information
machinery and materials; equipment
aircraft
electric fan
inside a plane; in-flight
vending machine
electrical machinery; appliances
captain (of an aircraft)
opportunity; chance
jet aeroplane; jet airplane
telephone (device)
speculation; venture; stockjobbing; gambling (on stocks)
good opportunity; chance
passenger plane
turning point
opportunity; chance; good time (to do)
organic matter
military secret; classified military material
nose (of plane)
quick; prompt; alert; smart; clever; astute; shrewd; quick-witted
good humour (humor); good mood
(sea) mine
loom; weaving machine
inorganic matter; inorganic substance
opportunity; chance; time; occasion
with this (as a reason, excuse, impetus, starting point, etc.); taking this as an opportunity; as a result (of this); as a consequence; from this point forward
copier; copy machine; photocopier
pout; displeasure; ill humor; ill humour; sullenness
(means of) transportation; transport; transportation facilities; transportation system; transit system
traffic light; traffic signal
(television, radio, etc.) receiver
information media; press; news organs
machine tool
fighter (aircraft)
vacuum cleaner; vacuum; hoover
riot police; riot squad
mechanization; mechanisation
bulletin; (party) organ
locomotive; engine
machine gun
washing machine; (clothes) washer
dynamo; power generator
terminal (unit)
vending machine
administrative organ; administrative body; governmental body
(railway) crossing gate; barrier (at a toll booth, parking lot, etc.)
financial institutions; banking facilities