to be useful; to be helpful; to serve the purpose
cartilage; nankotsu; (dish of) gristle (usu. of chicken, deep-fried)
food for specified health uses (e.g. cholesterol reduction); designated health food
yogurt; yoghurt; yoghourt
medicine for internal disorders
intestinal flora; enterobacterial flora
falling down; tumbling; reversing; inverting; getting upset
fetus; foetus; embryo; unborn child
to bite; to chew; to gnaw; to fumble one's words (esp. during a play, broadcast, etc.); to falter with one's words; to crash against (e.g. of waves); to break onto (shore)
cavity; tooth decay; decayed tooth; dental caries
what with this and that; for a number of reasons
advertising insert (e.g. in a newspaper); inserted flyer
dissatisfaction; discontent; displeasure; complaint; unhappiness
fungus; germ; bacterium; bacillus
common sense; good sense; common knowledge; general knowledge; common practice; accepted practice
bad character; bad person; villain; baddie
objection; refutation; rebuttal; counterargument
immunity; immunization; immunisation; being hardened (to); being unaffected (by); being accustomed (to)
authority; power; influence
giving and taking; exchange (of letters); arguing back and forth; (conversational) exchange