Buddhism and Christianity are both global religious traditions with many schools, but they begin from different theological frameworks. Christianity is centered on God and Jesus Christ; Buddhism is centered on awakening, the Dharma, and liberation from suffering and rebirth.

God and ultimate reality
Most Christian traditions believe in one God who creates and sustains the world. Nicene Christianity understands God as Trinity: Father, Son, and Holy Spirit.
Buddhism does not require belief in a creator God. Buddhist traditions focus on dependent arising, impermanence, karma, rebirth, emptiness or non-self, and nirvāṇa.
Jesus and the Buddha
Christians confess Jesus as Christ and, in mainstream Christianity, as the divine Son incarnate. His death and resurrection are central to Christian salvation.
Buddhists revere Siddhartha Gautama as the Buddha, an awakened teacher who realized and taught the path to liberation. He is not normally understood as a creator deity.
Salvation and liberation
Christian traditions speak of reconciliation with God, forgiveness of sin, grace, resurrection, and eternal life. They differ over how faith, sacraments, works, and church life relate to salvation.
Buddhist traditions speak of overcoming greed, hatred, delusion, and the cycle of rebirth. Nirvāṇa is not simply another word for Christian heaven.
Ethics and practice
Both traditions value compassion, generosity, moral discipline, and care for others. Christians may pray, worship, receive sacraments, read Scripture, and practice charity. Buddhists may meditate, chant, keep precepts, make offerings, study Dharma, and support the Saṅgha.
Similar ethical behavior arises from different theological and philosophical foundations.
Respectful comparison
Neither religion can be reduced to slogans. A fair comparison names major differences while recognizing diversity within Catholic, Orthodox, Protestant, Theravāda, Mahāyāna, Vajrayāna, and other communities.