The difference between Loud and Vocal

When used as nouns, loud means high-quality marijuana, whereas vocal means a vocal sound.

When used as adjectives, loud means of great intensity, whereas vocal means of or pertaining to the voice or speech.

Loud is also adverb with the meaning: loudly.

check bellow for the other definitions of Loud and Vocal

Loud as an adjective (of a sound):

Of great intensity.

Examples:

"Turn that music down; it's too loud.'"
Loud as an adjective (of a person, thing, event, etc.):

Noisy.

Examples:

"a loud party that went on all night"
Loud as an adjective (of a person, event, etc.):

Not subtle or reserved, brash.
Loud as an adjective (of clothing, decorations, etc.):

Having unpleasantly and tastelessly contrasting colours or patterns; gaudy.

Examples:

"a loud style of dress; loud colors'"
Loud as an adjective (of marijuana, slang):

High-quality; premium; having a strong or pungent odour indicating good quality

Vocal as an adjective:

Of or pertaining to the voice or speech

Examples:

"'vocal problems"
Vocal as an adjective:

Having a voice
Vocal as an adjective:

Uttered or modulated by the voice; oral

Examples:

"'vocal melody"

"'vocal prayer"

"'vocal worship"
Vocal as an adjective:

Of or pertaining to a voice sound; spoken
Vocal as an adjective (phonetics):

Consisting of, or characterized by, voice, or tone produced in the larynx, which may be modified, either by resonance, as in the case of the vowels, or by obstructive action, as in certain consonants, such as v, l, etc., or by both, as in the nasals , , ng; sonant; intonated; voiced. See voice, and vowel
Vocal as an adjective (phonetics):

Of or pertaining to a vowel; having the character of a vowel; vowel

Examples:

"a vocal sound"
Vocal as an adjective:

loud; getting oneself heard.

Examples:

"The protesters were very vocal in their message to the mayor."

Vocal as a noun (phonetics):

A vocal sound; specifically, a purely vocal element of speech, unmodified except by resonance; a vowel or a diphthong; a tonic element; a tonic; distinguished from a subvocal, and a nonvocal
Vocal as a noun (Roman Catholic Church):

A man who has a right to vote in certain elections.