Following on from discussions in #2234 and elsewhere, I thought it would help to create a single separate issue to track and discuss suggested further updates to that page. - [x] Create page (#2234) - [x] Add units (e.g. #2311) - [x] "irradiation" -> "irradiance" ([comment](https://github.com/pvlib/pvlib-python/pull/2234#discussion_r1793592373), #2289) - [x] Adopt [sphinx-hoverxref](https://sphinx-hoverxref.readthedocs.io/en/latest/usage.html#tooltip-on-glossary-terms) ([comment](https://github.com/pvlib/pvlib-python/issues/1421#issuecomment-2403272459), #2290) - [x] Enhance definitions (refer to `dni` example) - [x] Add new definitions (e.g. #2264) - [x] Address overlaps and inconsistencies (e.g. #2272) Supporting: #2234 Related / additional context: #1421