Why do ribosomes exist in the free and bound configurations in eukaryotic cells?

Are these strong bases, neutral, strong acids, weak acids or weak base household bleach (ph=12.6) fluid in a car's battery (ph of less than 1.0) milk (ph=6.7) stomach contents (ph=2.2) pure water (ph=7)

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute

In general, are there any major differences that you can see? explain