First part
Introduction and first part are semantically related. In some cases you can use "Introduction" instead a noun phrase "First part".
Introduction
Introduction noun - A short section (as of a book) that leads to or explains the main part.
First part and introduction are semantically related. You can use "First part" instead a noun "Introduction".
Both terms in one sentence
- Apocalypse Wow: The introduction to the timeline, which was the first part to be written, describes the destruction in horrifying detail.
Source: Literature / 1983: Doomsday -
Lost Woods: The first part of Serenia, and your introduction to the Age.
Source: Video Game / Myst IV: Revelation - When The Megas came out with History Repeating: Blue, the title song was split into two parts, the first part being an introduction and the second being a remix of Mega Man 3's ever-famous Title Theme.
Source: Siamese Twin Songs
Cite this Source
Introduction and First part. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/first_part/introduction
First part & Introduction. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/first_part/introduction>.
Introduction or First part. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/first_part/introduction.
Google Ngram Viewer shows how "first part" and "introduction" have occurred on timeline