noun: The inability to recall names of people or objects.
From Latin a- (without) + nom (name). Earliest documented use: 1900. Don’t confuse the word with anomie.
“In Dad’s case of anomia, he’s been calling his nightly can of beer ‘ink’. Sometimes he calls it ‘gas’, which makes a kind of sense.”
Patricia Traxler; I’m Still Listening for My Father’s Words; Newsweek (New York); Jun 11, 2007.