Morning is a noun, and it can be used as an adjective as well.
If you are referring to Maya Angelou's speech "On The Pulse Of Morning", it was the 1993 inaugural speech for Bill Clinton.
"In the morning" is a prepositional phrase, where "in" is the preposition and "morning" is the object of the preposition.
Morning is usually a noun or an adjective.
The above is a simple declarative sentence.
"Good morning" is considered a greeting or an interjection, not a traditional part of speech like a noun or verb.
Ana is as slow as molasses in the morning. What does this figurative language mean?
what type of speech is think
The phrase good morning is an interjection. It is a greeting used in the morning.
morning everyone?
a type of speech
the next day at around 9 in the morning
By saying Good morning
tomorrow is an adjective, like tomorrow morning, tomorrow is an adjective describing morning.