Convert, proselyte are synonyms only in being applicable to the same person. Both denote a person who has embraced another creed, opinion, or doctrine than the one he has previously accepted or adhered to.
Contract, shrink, condense, compress, constrict, deflate denote to decrease in bulk, volume, or content, but they vary widely in their suggestion as to how this decrease is effected and what consequences it has.
Contract, bargain, compact, pact, treaty, entente, convention, cartel, concordat designate an agreement reached after negotiation and ending in an exchange of promises between the parties concerned.
Continuation, continuance, continuity are often confused, especially when meaning the quality, the act, or the state of continuing or of being continued or an instance revealing such a quality, action, or state.
Continual, continuous, constant, incessant, unremitting, perpetual, perennial are comparable when meaning characterized by continued occurrence or recurrence over a relatively long period of time.