Basically it is a sieve.It is used for straining things such as flour.
Sifter
These are called windmills.
I use 3 , the sieve, the colander or the straining spoon
If you are refering to the stone bowls used to hold the wheat to be ground into flour it's called a mortar the items to grind the wheat is called a pestle.
That is called the "efficiency" of the device.
The device is called a barometer.
Twerking
The device used for measuring earthquakes is called a seismometer.
its called a sonogram
The device is called a switch.
When used as a verb, strain is an action verb, for example: He leaned forward and strained his back. The action it denotes is straining.
a match
Grease, oil or butter and flour is called a Rue. It is used to thicken sauces, stews, soups or to make gravy.