Strictly, the title deed of a condominium unit is an Or Chor 2 อ.ช.2, and not a Nor Sor 4 Jor น.ส.4 จ - however both are commonly called a chanote, which is phrase used by the OP.
I completely accept where you are coming from, however the reason we are having this discussion is because non-Thai citizens can be listed on a condominium title deed and getting back to the OP, if the title deed that was lost belonged to a non-Thai citizen then they would have to take their passport along to the Land Office.
If you ask non-Thai condominium owners what the name of their condominium property deed is I think the vast majority would answer, "Chanote" and very few indeed would answer, "Or Chor Song".