calculus
clot
lump
solidification
action
activity
concentration
conjugation
jointure
natural action
natural process
unification
union
uniting
concrete
benedictory
breccia
calcedony
cementation
clay-slate
congelation
crystallization
dioxane
divagation
duarchy
fluidity
incrustation
infiltration
liquefaction
menstruum
ossification
sparry
zeolite