Исчисляемые: wall - walls, pen - pens, picture - pictures, gentleman - gentlemen, leaf - leaves, time - times (в значении разы, а не время), hour - hours, cargo - cargoes, child - children, woman - women, hotel - hotels, idea - ideas, watch - watches, clock - clocks, piano - pianos, potato - potatoes, coffee - coffees (в значении чашка кофе), paper - papers, foot - feet, university - universities, class - classes, country - countries, day - days, father-in-law - fathers-in-law, tooth - teeth, discovery - discoveries, crisis - crises, criterion - criteria, phenomenon - phenomena, soprano - sopranos.
Неисчислимые: chalk, water, time (в значении время), tea, glass, ink, butter, ice, coffee (в значении кофе как вещества), money, music, tobacco,