comprehension; consent; understanding; OK; roger (on two-way radio)
fast; quick; early (in the day, etc.); premature; (too) soon; not yet
a little; a bit; just a minute; for a moment; somewhat; rather; (not) easily
alone; by oneself; on one's own
that's good; that's nice; like (on social media); is that clear?; OK?
new type; new style; new model; new strain (e.g. infectious disease)
artificial; man-made; human work; human skill; artificiality
muscle; tendon; vein; artery; fiber; fibre; line
to concern; to be related
information; news; intelligence; information; data contained in characters, signals, code, etc.
to enter; to go into; to break into; to join; to enroll; to contain; to hold
target group; target persons
chase; pursuit; tracking; following up; tracing
small quantity; little; little while; short distance
service; help; discount; discounted item; free service; freebie; service