You can use the words you want, although in most situations people will understand you better if you say “blood pressure monitor” – unless you’re in the medical field and need to be more specific.
The caving one bothers me because people talk about a sport they don’t do or their friends don’t do with a word only outsiders use. It shows you don’t want any connection to the actual people who do it and who sometimes die in accidents.
You can use the words you want, although in most situations people will understand you better if you say “blood pressure monitor” – unless you’re in the medical field and need to be more specific.
The caving one bothers me because people talk about a sport they don’t do or their friends don’t do with a word only outsiders use. It shows you don’t want any connection to the actual people who do it and who sometimes die in accidents.