Collocations for heavy - adj.

be, feel, look, seem
My suitcase was beginning to feel very heavy.

become, get, grow
You're getting too heavy to carry!
She felt her eyelids growing heavy (= she was getting sleepy).

make sth
The bottles of wine made the bag even heavier.

find sth
I didn't find it too heavy to carry.

extremely, fairly, very, etc.
Be careful. That box is rather heavy.

be
become, get
The rain was getting very heavy.

extremely, fairly, very, etc.
The traffic's really heavy on the roads today.

Heavy is used with these nouns:
accent, armour, artillery, atmosphere, bag, barrage, blanket, bleeding, blizzard, blow, bombardment, bombing, boot, breast, breath, breathing, brow, build, burden, cargo, cart, casualty, chain, charge, clay, cloak, clothing, cloud, coat, cold, commitment, concentration, construction, consumer, consumption, cost, cream, criticism, crop, cruiser, curtain, damage, debt, defeat, demand, dependence, dew, door, downpour, drain, drape, drinker, drinking, duty, emphasis, engineering, equipment, exercise, expenditure, eyebrow, eyelid, fabric, fall, favourite, fighting, fine, fire, flow, fog, fold, foliage, footstep, freight, fringe, frost, frown, gambler, garment, gate, glasses, guard, gun, gunfire, heart, hint, horse, housework, impact, industry, investment, irony, jacket, jumper, layer, lid, load, lorry, loss, luggage, lump, lunch, machinery, make-up, manufacturing, mascara, meal, metal, mist, mob, mortar, music, object, oil, overcoat, pack, penalty, period, plough, punishment, rain, rainfall, reading, reliance, responsibility, rock, sack, sacrifice, sarcasm, saucepan, scent, schedule, sea, sedation, sentence, shading, shawl, shoe, shopping, shower, sigh, silence, silk, sleep, smog, smoke, smoker, smoking, snow, snowfall, soil, spectacles, steering, step, stone, storm, strain, subsidy, suitcase, surf, sweat, sweater, swell, taxation, thud, thump, timber, toll, trading, traffic, tread, truck, turnout, usage, use, user, velvet, volume, weapon, wear, weight, work, workload