No, "pleasant" is not a noun. It is an adjective that describes something as enjoyable, pleasing, or agreeable.
No, "agreeable" is not a compound word. It is a standalone word that is used to describe something that is pleasing or pleasant.
pleasing, agreeable, attractive
"Agradable" means "pleasant" or "agreeable" in Spanish. It is used to describe something that is pleasing to the senses or enjoyable.
agreeable, kind, nice, pleasing, respectful
Agreeable means pleasing, pleasant or willing to agree.
Words could include amiable, affable, or pleasant.
Agreeableness is a personality trait characterized by being friendly, cooperative, and empathetic towards others. People high in agreeableness are typically warm, kind, and considerate in their interactions with others. They tend to prioritize harmony and relationships in their social interactions.
enjoyable amiable agreeable pleasing friendly pleasurable nice lovely
The word is pleasant.
1 : pleasing to the mind or senses especially as according well with one's tastes or needs 2 : ready or willing to agree or consent 3 : being in harmony :http://www.merriam-webster.com/dictionary/agreeable
Agreeable to the palate or taste; savory; hence, acceptable; pleasing; as, palatable food; palatable advice.