Lichenology is the study of lichens, a unique group of organisms that are made up of two different species - a fungus and an alga or a cyanobacterium. Synonyms for the word lichenology include lichenology science, lichenography, lichenonomy, and lichenology research. These terms are used interchangeably to describe the scientific study of lichens, their classification, ecology, and biochemistry. Lichenography is particularly focused on the description and illustration of lichens, while lichenonomy deals with lichen nomenclature and naming conventions. Lichenology research is a broad field that incorporates molecular biology, bioinformatics, and ecology to study lichens and their relationships with their environment.