substitution; replacement; permutation; substitution; displacement
petrifaction; petrification; mineralization; mineralisation; lithification; fossilization
to learn; to acquire knowledge; to carry; to wear (clothes, etc.); to put on
murder; killing; murderer
till; to; concerning (an area of expertise); swearing by (one's sword, God, etc.)
to soak (into); to permeate; to sting (of a wound, sensitive area, etc.); to smart; to be infected (e.g. with vice); to be steeped (e.g. with prejudice)
solution (of an equation, inequality, etc.); root (e.g. of a polynomial); solution (to a given problem); answer; explanation; interpretation
eclipse (solar, lunar, etc.); occultation
basement membrane; basal lamina
coagulation factor; clotting factor
versus; against; to (e.g. score of 4 to 2, ratio of 3 to 1, vote of 320 to 180); toward ...; to ...; equal footing
encroachment; invasion; erosion (e.g. of market share, rights); erosion; corrosion
to match (rhythm, speed, etc.); to join together; to unite; to face; to be opposite (someone); to compare; to check with
analgesic; painkiller; sedative; tranquilizer (tranquiliser); anodyne
fainting; losing consciousness; passing out; syncope
relief; mitigation; alleviation; relaxation (of restrictions, tensions, etc.); easing; softening
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)
easy delivery; easy childbirth; safe birth
seems to be; appears to have; supposed to be
come, come; come; come now; here you go; here; when handing something
enough; sufficient; sufficiently; fully; division into ten
light; easy; non-serious; minor
(forming a) circle; huddle; circular (battle) formation
easy; simple; easygoing; lighthearted; simplistic
half-moon; half a month; semicircle
series of articulated plates attached to the back and sides of a Japanese helmet
execution by tying a victim to a post and stabbing with spears; crucifixion
pointing down; pointing downward; (market) decline; downturn; downward trend
thorn; spine; splinter (esp. lodged in one's flesh); hard sharp item (esp. lodged in one's throat, e.g. fish bone); biting words
spear; lance; javelin; lance; (arch.) jeering
peak; summit; ridge; back of a blade
passion; passions; (sexual) desire; craving
mincing; cutting; rapping (a percussion instrument); beating; shredded tobacco; interval
needing care (of a person); needing to be looked after; troublesome; annoying; difficult