Having encountered terms or acronyms that I am not familiar with, it oocurs to me that others might also. Here is a start at listing them, feel free to add those that are missing, or that you have just encountered, or even to correct those that are wrong! Insert them in alphabetical order.
Birding = looking for birds
Botanizing = looking for plants
CID = Community Identification (the >2/3rd majority taxa in common with all IDs made)
DQA = Data Quality Assessment (found at bottom of an Obs page)
Herping = looking for amphibians and reptiles. ie ‘herpetology’
ID = Identify (verb), Identification (noun)
iNat = iNaturalist in all it’s glorious forms!
Obs = Observation
RG = Research Grade
Sally Searching = looking for salamanders
YMMV = Your Mileage May Vary (meaning ‘it could be different for you’)