An organism will have both genotype and a phenotype for a specific trait. If we are considering what trait is physically expressed, this is
If we consider the genetic basis of
the trait, this is

If we are considering what trait is physically expressed, this is the phenotype. If we consider the genetic basis of the trait, this is the genotype.

Explanation:

An individual's genotype is the collection of its genes. When we talk about individual traits, the term genotype refers to the combination of alleles that determine it. For example, our eye color will depend on our genotype.

An individual's phenotype includes its observable characteristics. It's mostly influenced by the individual's genotype, but there are other factors that influence it as well - epigenetic changes and environmental factors. For example, flamingos aren't naturally pink. They are naturally white but turn pink because of the pigments found in the organisms they feed on. Their genotype dictates the white color, but because of environmental factors, they are pink (their phenotype).

i'd say that the moon rock is about 2.2 billion years old.