Dominant Trait:

A dominant trait is a trait that will appear in the offspring if the parent contributes it

Ex: eyelashes, eyelashes, dimples

Recessive Trait: relating to or denoting heritable characteristics controlled by genes that are expressed in offspring.
Ex: Freckles, Straight hair, hitch hiker thumbs

Genotype: Genetic makeup of a cell.
Ex: Eye color, Hair color, height

Phenotype: An obvious and observable trait.
Ex: sound of voice, types of disease, certain behaviors