I have the same problem I went to the doctor but he never said a thing ,I said maybe it's depression and he looked at me knowingly.Judge I think this is normal. I've been having this issue with word retrieval for several years especially for words I don't use often such as your example. I'm older than you and I think it's fairly normal part of the aging process and not indicative of developing any type of dementia. But it sure is annoying. I find I do actually recall the words I'm looking for but not as fast as I want to.
I know I had the lack of vitamin b related dementia after the infection because I'd lost too much weight to quickly.
now I keep thinking it's hormonal specifically perimenopause ,The problem is in the UK psychologists and psychiatrists tell you as little as they possibly can same for other therapists.
if you don't have insurance in the UK they only really tell you anything if it is considered life-threatening and then they talk to you like you're an idiot when you ask for something and say you probably won't prescribe it.