This structure is called a large lattice.
Can you call patterned glass murano glass if it is not from Murano?
That is the tread
Vinculum
A bar.
A covalent bond.
Such a bond is an convertible bond.
A continuously callable bond is a type of bond that can be redeemed by the issuer at any time, usually after a specified initial period. The terms and conditions of a continuously callable bond typically include the issuer's right to call the bond at any time, the call price at which the bond can be redeemed, and any associated call protection provisions for the bondholder.
It is called an ionic bond
REPEATING
Irrational.
a event that occurs over and over
It is called bond or chemical bond.