certain; sure; definite; reliable; sound; solid
the body; the flesh; the outer man; one's physique
change; variation; variety; diversity; inflection; declension
sense; sensation; feeling; intuition
to get used to; to grow accustomed to; to become skilled in; to become experienced at; to become tame; to become domesticated
change to ...; becoming ...; making into ...; -ization; -ification
nothing special; no big deal; doesn't matter