Ekanite is a rare mineral that belongs to the tetragonal crystal system. It is typically dark green in color and contains rare-earth elements such as yttrium and thorium. Due to its rarity, there are not many synonyms for ekanite. Some minerals that share similar properties with ekanite include xenotime, zircon, and monazite. However, these minerals have distinct physical and chemical characteristics that set them apart from ekanite. Ekanite has also been known by other names such as tetranatrite and thorutite, but these terms are not commonly used. Overall, ekanite remains a unique and valuable mineral in the world of geology.