Matched context for castor and caster

The page lists matched contexts for castor and caster.

Share - castor	Share - caster	Phrase
19.79%	15.78%	{castor or caster} angle
7.10%	13.60%	{castor or caster} wheel
6.31%	2.76%	adjust {castor or caster} [perform operation]
3.70%	1.14%	wheel {castor or caster}