I've only just tuned in to the thread on 'abstract' and 'concrete' rather too late to contribute there. But I thought of the word 'being' is this abstract or concrete
'a human being' is one member of Homo sapiens so that suggests 'being' is concrete.
What about the phrase
' ..we live and move and have our being' (bible)?
'live' suggests existing, so 'being' must be something more - spirit? personality? essential self? so is this abstract?
We're getting into philosophy here!
Deacartes (I think) said 'cogito ergo sum' - 'I think therefore I am' but I don't think that gets us any further!
An interesting thing about the verb 'to be' is that it is irregular in English and certainly in Latin and French - is that true of all languages?
When early hominids first became aware of 'self' did 'I am' , 'you are' , 'he is' express the sense of individuality - we are different beings?