Why does a familiar word/name sound suddenly unfamiliar, like im not sure if its a word even though it is? for example name christian started to sound weird to me even though i know its a common name?

I would suggest a face to face of tele eval with you PCP would be a good choice. Word-finding difficulty: a clinical analysis of the progressive ...www.ncbi.nlm.nih.gov › pmc › articles › PMC2373641

A stroke or Dementia can result in a similar issue. Alexia can happen due to inability to access orthographic memory.

we form 3 set of relationships with any word for feeling (Chit) - the feelings with our past experience and create a Triad based on past whether we felt good with that word, or bad - awareness or experience - buddi (Tat) and this becomes a relationship based on our ego - justice right way to be treated vs being disrespected - vs creating amnesia with that word creates bliss Tat Chit Ananda - Bliss

Let me speculate. Perhaps there is a family history, but you may well possess the early phases of a Frontal-Temporal Dementia which is language predominant. Would take this seriously, see a neurologist and get MRI at the least. At age 20, a neuropsychological exam is indicated, and a speech therapist should get involved. Sorry to be blunt, but have seen this before. Can be helped. Good luck.