Flutes, and reed instruments
If you're talking about meterology and the weather, the instrument that measures the wind is called an Anemometer. However, in terms of musical instruments, they are plainly refered to as the Wind Instruments, but can be further divided into two groups, the Brass Instruments and the Woodwind Instruments.
No.
There are some products that are similar to the timbres. Like the musical instruments, the string groups, the envelope instruments and the percussion instruments.
There are four (4) groups of instruments: Strings, Woodwinds, Brass and Percussion.
The two groups were Theravada Buddhism and Mahayana Buddhism.
Flutes, and reed instruments
Pitched and unpitched instruments.
The flutes and the reeds.
In the mid 600
The Mahayana and the Therauda
Mahayana and Theravada
The two groups split in the most simple terms, because of fighting over their lineage to Muhummad, the Prophet.
strings and nonstring instruments
Many groups fought, but if the Holocaust were to be split into two groups, they would be the victims and the perpetrators.
Mensheviks and bolsheviks
No. Islam didn't split into two groups at the death of the Prophet SAW. It split into two political groups when the rebels mercilessly martyred the third Rightful Caliph Hazrat Usman RAU. The religious division came much later.