存在【そんざい】
existence, being, presence
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
不在【ふざい】
absence, disregard, indifference
滞在【たいざい】
stay, sojourn
実在【じつざい】
actual existence, real existence, existing in real life
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)
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
在籍【ざいせき】
being enrolled (at a school), being registered, being a member (of a team, organization, etc.)
在住【ざいじゅう】
residing, living, dwelling
在庫【ざいこ】
stock, inventory
在りし日【ありしひ】
past days, bygone days, days of yore, the olden days, while still alive, during one's lifetime
在宅【ざいたく】
being at home, being in
駐在【ちゅうざい】
residence, stay, (job) posting, being stationed (overseas, etc.), residential police box, residential police box officer
在任【ざいにん】
being in office
所在【しょざい】
whereabouts, place where one is, position, location
在来【ざいらい】
pre-existing, already there, conventional
自在【じざい】
being able to do as one pleases, doing at will, pothook
在京【ざいきょう】
being in the capital (i.e. Tokyo, or formerly Kyoto)