which

What, of those mentioned or implied.

Which song shall we play?

They couldn't decide which song to play.

Which one is bigger?

Show me which one is bigger.

The/Any ... that; whichever.

Take which one you want.

You may go which way you please.

Designates the one(s) previously mentioned.

After glaring upon the smoking philosopher, who took his misfortunes with such positive nonchalance, he growled out an oath in German, which language is particularly adapted for growling in; then, raising his hand, he dealt him a blow on his pipe, which sent it, like a rocket, into the midst of the players.

Whitaker’s blog post, housed on a website called Minutes Before Six, goes on to make references to Albert Camus’ 1947 classic, The Plague, dips into a Camus-inspired existential ramble and returns to an attempt to convey the detail of Prieto’s being essentially “noble,” which fact, he admits, will be lost in translation to anyone unfamiliar with death row units.

All the phones come in plastic bodies that have been given a brushed-metal finish and carry 64-bit processors from Intel, which fact they proudly announce with an Intel Inside logo on the back.

He once owned a painting of the house, which painting would later be stolen.

What one or ones (of those mentioned or implied).

Which is which?

By now, you must surely know which is which.

Which is bigger, the red one or the blue one?

I'm unable to determine which is bigger.

The/Any ones that; whichever.

Please take which you please.

In a non-restrictive relative clause, referring to something previously mentioned. Referring to a preceding noun.

I dropped a saucepan, which knocked over the eggs, which went all over the kitchen floor.

I found my camera, which I thought I'd lost, under the bed.

I entered the room, at the far end of which was a small table.

Sunning himself on the board steps, I saw for the first time Mr. Farquhar Fenelon Cooke.[…]A silver snaffle on a heavy leather watch guard which connected the pockets of his corduroy waistcoat, together with a huge gold stirrup in his Ascot tie, sufficiently proclaimed his tastes.

altertümlichIn a non-restrictive relative clause, referring to something previously mentioned. Referring to a preceding noun. Used of people (now generally who, whom, that; which remains possible with words also referred to by it such as baby, child).

She had a young child, which cried incessantly.

In a non-restrictive relative clause, referring to something previously mentioned. Referring to a preceding statement.

The front door was open, which concerned me.

He had to leave, which was very difficult.

She saved my life, for which I am eternally grateful.

Plastics are energy-rich substances, which is why many of them burn so readily.

In a restrictive relative clause, referring to a noun previously mentioned.

This is the letter which I received.

This is the letter in which he explains his decision.

Forasmuch as many have taken in hand to set forth in order a declaration of those things which are most surely believed among us...

altertümlichIn a restrictive relative clause, referring to a noun previously mentioned. Used of people.

The men which acompanyed him on his waye stode amased, for they herde a voyce, butt sawe no man.

Introduces an anacoluthon.

We didn’t find any strips of skin. Which, by the way, ughhh!

Scientists have discovered the bones of a three-foot-tall, 15-pound parrot that lived some 16 million years ago. The remains had initially been misidentified as those of an “enormous, possibly human-eating eagle,” which … yikes.

So clearly, any list of college basketball’s best big men will have a wide variety of body types and a wider variety of skill sets. Which, cool.

Nate’s brother gestures toward me as though I’m a piece of trash he passed on the street—which, okay, valid.

And.

They only offered me five dollars, which I wouldn’t do it for less than fifteen.

“Just leave them under the seat, okay,” she says, knowing that in all likelihood I won’t be able to leave this party. This house. This neighborhood. That it’s possible I won’t even open the driver’s side door. Yet she’s doing this anyway. Which, maybe that’s her point.