Word: nightglows
Part of speech: Noun
Syllables: night
glows
Definition: Plural of nightglow;  is a faint emission of light by a planetary atmosphere
Morphemes:
Affix: night
Language: en
PoS: Noun
Meaning: Darkness (due to it being nighttime).
Affix: glow
Language: en
PoS: Noun
Meaning: The state of a glowing object.
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form the plural of nouns that correctly take just an "s" in the plural. See greengrocer’s apostrophe.