Beginner-English intermediate-english Complex by rob2018|Published November 2, 2025 NOUN: A group of buildings- A sport complex (picture) ADJECTIVE: something that has many parts or is hard to understand – A complex idea Related Articles: Glossary: RuinE215 The Egyptian Pyramids (long version)E801 200 Common Words Frequently Mispronounced by BeginnersE301 TOEIC TESTB129 Passive Voice-The Egyptian Pyramids