pleiad

As a proper noun galaxy

is (astronomy|dated) the milky way galaxy, from when it was thought the universe (our universe) had only one galaxy.

As a noun pleiad is

a group of illustrious or talented people, especially one with seven members.

As nouns the difference between pleiad and pleid

is that pleiad is a group of illustrious or talented people, especially one with seven members while pleid is (zoology) any member of the pleidae.

As a verb plead

is to present an argument, especially in a legal case.

As a noun pleiad is

a group of illustrious or talented people, especially one with seven members.