a peer
an equal, a colleague
ardour
enthusiasm, passion, intensity
decay
destruction, decline
chariot
a ceremonial carriage, drawn by horses
enamour'd
charmed, in love with, fascinated
Hesperus
another name for the evening star (the planet Venus visible in the sky at night) in Ancient Greece
interpose
interfere, putting oneself in between
allay
to ease, to alleviate, to appease