A lot of keys are often referred to as a "keyring" or "keychain" when they are grouped together for convenience. In a more general sense, a large collection of keys might simply be called a "set of keys." Additionally, in some contexts, a large number of keys may be described as a "bunch" or "bundle" of keys.
a lot
Normally they're called valves. There are some trumpets out there with rotary valves, which are often just called keys.
They are called valves.
This is called a glissando although generally a glissando doesn't involve all the keys.
keys
Keys
Solar Cave has some keys, but Western Cave has a lot of keys. Bring an X-Ray Specs to Western Cave to find about 5-10 keys in the first few floors.
There are no keys on Back Lot island.
Keys - as in a board of keys = keyboard
a lot
The keys on a piano keyboard come in different sizes, with the white keys being longer and wider than the black keys. The white keys are called naturals and the black keys are called accidentals.
up and down keys ;)
These keys are often referred to as the home row on the keyboard.
A Piano
Normally they're called valves. There are some trumpets out there with rotary valves, which are often just called keys.
A collection of keys is often referred to as a "keyring" or "keychain." These terms denote a loop or chain that holds multiple keys together for convenience and organization. In a broader context, a group of keys can also be called a "set of keys."
Not the starter, but the weight of the keys can be damaging to the ignition key cylinder.