2. Make nouns with the help of necessary suffixes. More than one version is possible. to improve, happy, art, electric, to measure, to report, to disappoint, to pave, bitter, to announce, to agree, to state, to found, to govern, able, science, to direct, to require, to mine, bore, cold, to arrange, to move, to develop, to achieve, to please, social, damp, type, capital, dark, music, piano, to conduct, friend, to compose, to drive, poet, member, to dictate, to appear, to fight, long, to invent, to lead, patient, to speak, chemist, weak, personal, slave. 3. Make adjectives with the help of necessary suffixes. More than one version is possible. care, beauty, intellect, doubt, fruit, ecology, north, post, hope, difference, thank, harm, colour, cloud, to change, to eat, centre, danger, comfort, to compare, to convert, to read, man, to comfort, to respect, sun, to expect, culture, form, accident, dirt, wood, fog, style, frost, care, to profit, rain, mountain, importance, thirst, interest, wind.​

2 Improvement, happiness, artist, electricity, measurement, reporter, disappointment, pavement, bitterness, announcement, agreement, statement, foundation, government, ability, scientist, director, requirement, miner, boredom, coldness, arrangement, movement, development, achievement, pleasure, society, dampness, typewriter (typing?), capitalism (capitalist, capitalization), darkness, musician, pianist, conductor, friendship, composer, driver, poetry, membership, dictation, appearance, fighter, long, length, inventor (inventory, invention), leader, patience, speaker, chemistry, weakness, personality, slaver

3 careful, beautiful, intellectual, doubtful, fruitful, ecological, northern, postal, hopeful, different, thankful, harmful, colourful, cloudy, changeable, eatable, central, dangerous, comfortable, respectful, sunny, expectable, cultural, formal, accidental, dirty, wooden, foggy, stylish, frosty, careful, profitable, rainy, mountainous, important, thirsty, interesting, windy