| Polymicrobial | Referring to more than one microbe; can be poly-fungal, poly-bacterial, or fungal-bacterial |
| Monoinfections | Infections with one microbe; either fungal or bacterial |
| Co-infections | Infections with more than one microbe; can be poly-fungal, poly-bacterial, or fungal-bacterial |
| Mixed biofilms or infections | Biofilms or infections with at least one bacterium and one fungus |
| Microbiota/microbiome | Entity of bacteria/bacterial genes in a certain niche or sample |
| Mycobiota/mycobiome | Entity of fungi/fungal genes in a certain niche or sample |
| Microbes/microbial: | In general, referring to bacteria and fungi |