Interesting words, issue seven

Some of these words here are either not real words or slang terms that I found amusing, which is a slight change from the usual contents of past posts.

alluvial, fluvial: These words both have to do with rivers. Alluvium is a type of soil/sediment that is deposited by rivers; it can consist of gravel, sand, clay and silt. Fluvial is just anything related to (found in, etc) a river or stream. When wading in the river, I sifted through alluvial deposits to find pebbles. The fluvial creatures scattered when I threw a rock into the stream. 

panny [d]: slang for pandemic. Additional slang terms for pandemic include panini and pandy. When will the panny d finally be over? The wedding was postponed due to the panini. 

tessera: the number 4 in Greek and/or a tile in a mosaic. The latter meaning presumably because those tiles have four sides, unless cut into some other shape. Plural is tesserae. The tesserae in the mosaic were arranged to spell out the store's name. 

struggle buggy: slang for an old car that may have some problems. It's too bad the air conditioning in your struggle buggy is broken. The only car they could afford was a secondhand struggle buggy that was 30 years old. 

wherehouse: humorous; not a real word, just an amusing thing I came across at one point. A misspelling of warehouse, I think. Otherwise, perhaps it could refer to a house at an unknown location. People who work in an Amazon wherehouse may be subjected to inhumane working conditions. I can't seem to find this wherehouse I'm supposed to be at for a tea party.