現在【げんざい】
the present, present time, now, as of, present tense, this world, this life, to actually exist, to exist right now, to exist right in front of one
存在【そんざい】
existence, being, presence
在日【ざいにち】
resident in Japan (of a foreigner), situated in Japan (e.g. of an embassy), Zainichi, Zainichi Korean, North or South Korean national with permanent residency in Japan (who came to the country before 1945, or a descendant of such a person)
滞在【たいざい】
stay, sojourn
不在【ふざい】
absence, disregard, indifference
駐在【ちゅうざい】
residence, stay, (job) posting, being stationed (overseas, etc.), residential police box, residential police box officer
潜在【せんざい】
potentiality, dormancy, latency
在学【ざいがく】
attending (school, college, etc.), being enrolled, being a student
在留【ざいりゅう】
residing (esp. abroad), staying, living
所在地【しょざいち】
location, address
在外【ざいがい】
overseas, abroad
健在【けんざい】
in good health, alive and well, going strong
在籍【ざいせき】
being enrolled (at a school), being registered, being a member (of a team, organization, etc.)
実在【じつざい】
actual existence, real existence, existing in real life
介在【かいざい】
existing (between), interposition, intervention, involvement