Homologous.
they are both homologous structures
No, lobster and krill are two different things, although they are both crustaceans.
A cell containing both sets of homologous chromosomes is called a diploid. One is usually taken from the mother and one from the father.
Structures
They are said to be heterozygous.
Yes, it is the plural form of claw
Giraffe and human neck vertebrae are homologous structure because they both have roughly the same shape, number, and function. The giraffe vertebrae are obviously much taller, but other than that they are nearly identical structures.
They both have an exoskeleton.
They are both. They are homologous because they are both examples of a vertebrate forelimb. They are analogous because they were adapted for flight independently of one another.
both but i rather call it claw machine people call it more that
Two samples are said to homologous, in this context, when they are both very similar in structure and shape and more than likely function.