Psalm is an English word that means hymn. These verses in the Bible are hymns that were sung. If you look at several of them, the notations are made on how to sing them, or who is to sing them. There are also notations about who wrote the particular psalm. Just like learning a song in choir, these are songs to be sung in public in praise of God.
A song of praise is called a hymn. Hymns are typically religious songs that are sung to show love, adoration, or devotion to a deity or higher power.
Hymns sung at Pentecost include: Come down O love Divine, Spirit of the Living God and Love Divine.
Hymns are not technically part of the Mass. The Roman Missal provides an entrance antiphon: an introit, a verse at the Offertory, and one at Holy Communion. Those are the only things which are supposed to be said. In the list of options, if those are not sung or said, way down, like the fourth choice would be a hymn. Hymns are normally only sung at the Office, not at the Mass, Catholic Mass has never provided for hymns, they are a protestant invention.
Hymns are sung in the church to praise and glorify god.
Psalm
Songs that are sung in Church are usually Hymns although Psalms are also sung.
Psalm 23 was written by king David when he was a king.
Some gospel hymns that were inspired by Psalms include "Amazing Grace" (Psalm 23), "The Lord is My Shepherd" (Psalm 23), and "I Will Bless the Lord at All Times" (Psalm 34:1). These hymns take the themes and messages from the Psalms and incorporate them into their lyrics to praise and worship God.
introit
Caroling originated from hymns sung in churches, since Christmas was originally a religious holiday.
The Responsorial Psalm occurs after the first reading in the Liturgy-of the Word. It may be the assigned psalm or a common (seasonal psalm). It should ALWAYS be sung and involve the assembly. There is usually a connection between the first reading and the responsorial psalm. It may be sung in a responsorial manner or a through composed.