if your talking about land then i am not sure but if your talking about chasteness or pureness then a synonym for continent could be "chaste" or "pure".
a synanym for approxiamtly is exactly, or even 100%
A good synonym for "incentive" is "motive".
A good synonym for "rushed" would be "hurried".
synonyms for "remuneration" are "payment", "reimbursement", or "compensation".
A synonym for "boarding school" is "academy".
I believe a synonym for "share-cropping" is "farming" or even "agriculture".
Keen is a synonym of "eager"
A synonym for "hominid(s)" is "human-like"
A good synonym for "forewarn" would be "admonish",because they both mean warn in advance.
A good word for"host"would be"manager",because they both mean that there is a person running everything.
Well "antonym" means "unlike word" ,while "synonym" means "like word" ,so the opposite of "like" is "unlike" so the answer is simply "antonym"
if your talking about making changes in something then "changing" would be good but if your talking about a place to make sacrifices then "shrine", "tabernacle" or maybe even "temple" would be good, but i would with the first two.