人生 (じんせい)(human) life (i.e. conception to death)

人生, its kanji, and other words that share them.Open this graph

Kanji in 人生

三人さんにんthree people
二人ふたりtwo persons; two people
人々ひとびとpeople; men and women
人口じんこうpopulation
人気にんきpopularity; public favor
人間にんげんhuman being; human
個人こじんindividual; private person
外国人がいこくじんforeigner; foreign citizen
学生がくせいstudent (esp. a university student)
生活せいかつliving; life (one's daily existence)
生産せいさんproduction; manufacture
先生せんせいteacher; instructor
厚生省こうせいしょうMinistry of Health and Welfare (now Ministry of Health, Labour and Welfare)
年生ねんせいpupil in ... year; student in ... year
新生しんせいrebirth; new birth
生徒せいとpupil; student

See how 人生 connects to the rest of Japanese.