grain

noun  (SEED)

UK  /ɡreɪn/ US  /ɡreɪn/

European countries are quite aggressive subsidizers of grain exports.

A few chickens were scratching around in the yard for grain.

The grain is still milled locally.

A tornado destroyed grain crops across much of the Midwest.

A surplus of corn has helped depress the grain market.

grains of sand

Anyone with a grain of common sense would have known what to do.

to cut something along/against the grain

exhaustion

noun [ U ]  extremely tired

UK  /ɪɡˈzɔːs.tʃən/ US  /ɪɡˈzɑː.tʃən/

She felt ill with/from exhaustion.

As they approached the end of the marathon, the runners looked near exhaustion.

Recovering from the utter exhaustion of such a long and difficult labour might take the mother several days.

She was taken into hospital suffering from exhaustion brought on by stress.

Ill with exhaustion, the expedition team had no strength left to make themselves a shelter.

The poor overworked horse collapsed from exhaustion and had to be put down.

Exhausted, they fell asleep.

By the time they reached the summit they were exhausted.

I must get some sleep - I'm exhausted.

I'm exhausted after lugging these suitcases all the way across London.

The children ran round and round the playground until they were exhausted.

He was driving through the night and he arrived in an exhausted state.

Many of the runners collapsed, exhausted, as they crossed the finishing line.

There's plenty of weeding to do now that the growing season's started.

a wedding cake/dress/invitation/present/reception

regenerate

verb   to grow again

UK  /rɪˈdʒen.ə.reɪt/ US  /rɪˈdʒen.ə.reɪt/

Tissue regenerates after skin is scratched.

Connections between regenerating retina and brain in adult goldfish.

fallow

adjective

UK  /ˈfæl.əʊ/ US  /ˈfæl.oʊ/

After a long fallow period, the author has brought out a new book.

When one airline reduces its prices, the rest soon follow suit.

a liquid/chemical fertilizer

livestock

noun [ plural ]

UK  /ˈlaɪv.stɒk/ US  /ˈlaɪv.stɑːk/

stock

noun

UK  /stɒk/ US  /stɑːk/

The local shop has a good stock of postcards and guidebooks.

It is now halfway through winter and food stocks are already low.

Shops are currently holding sales to clear their summer stock .

They're trying to get old stock off their hands by cutting prices.

They're selling off last year's stock at half price.

They've got several nice Bordeaux in stock.

It's my job to keep a check on stock levels.

They own 20 percent of the company's stock.

government stock(s)

vegetable/beef/chicken stock

He's an American of Irish stock.

Most supermarkets stock a wide range of wines.

He has a part-time job stocking shelves in the local supermarket.

intensive

adjective

UK  /ɪnˈten.sɪv/ US  /ɪnˈten.sɪv/

two weeks of intensive training

an intensive course in English

As agriculture became more capital intensive, many farm labourers moved to the towns and cities to look for work.

In some areas, modern intensive farming is giving way to the re-introduction of traditional methods.

depletion

noun [ S or U ] reduction

UK  /dɪˈpliː.ʃən/ US  /dɪˈpliː.ʃən/

What is Depletion?

Depletion is an accrual accounting technique used to allocate the cost of extracting natural resources such as timber, minerals, and oil from the earth. 

Like depreciation and amortization, depletion is a non-cash expense that lowers the cost value of an asset incrementally through scheduled charges to income. Where depletion differs is that it refers to the gradual exhaustion of natural resource reserves, as opposed to the wearing out of depreciable assets or aging life of intangibles.

https://www.investopedia.com/terms/d/depletion.asp