New testament and Old testament

New testament noun - The collection of books of the Gospels, Acts of the Apostles, the Pauline and other epistles, and Revelation; composed soon after Christ's death; the second half of the Christian Bible.

Old testament and new testament are semantically related in religion topic. In some cases you can use "Old testament" instead a noun phrase "New testament", when it comes to topics like covenant, scripture, bible.

Old testament noun - The collection of books comprising the sacred scripture of the Hebrews and recording their history as the chosen people; the first half of the Christian Bible.

New testament and old testament are semantically related in religion topic. You can use "New testament" instead a noun phrase "Old testament", if it concerns topics such as covenant, scripture, bible.