Radon detectors, railing, rebar, recessed lighting, registers for heat & air conditioning, reinforcing steel, rocks, roofing shingles and rugs are building materials. They begin with the letter r.
his name is Robert
Rush is a rock group that starts with "R".
ramhadanna
Reah
Ryou.
Russia
Razor
Their is not another name for HIV that starts with an R. That said, HIV is a type of retrovirus. That is probably the word you are looking for.
A name that starts with an "R" and ends with an "O" could be "Rico." Other possibilities include "Rocco" or "Reno."
Roswell, NM.
Rashid
Repast