A dental abscess (also termed a dentoalveolar abscess, tooth abscess or root abscess), is a localized collection of pus associated with a tooth. The most common type of dental abscess is a periapical abscess, and the second most common is a periodontal abscess.In a periapical abscess, usually the origin is a bacterial infection that has accumulated in the soft, often dead, pulp of the tooth. dental abscess (also termed a dentoalveolar abscess, tooth abscess or root abscess), is a localized collection of pus associated with a tooth. The most common type of dental abscess is a periapical abscess, and the second most common is a periodontal abscess.
The Duet (1628), by Hendrick ter Brugghen. A duet is a musical composition for two performers in which the performers have equal importance to the piece. It is often used to describe a composition involving two singers. It differs from a harmony, as the performers take turns performing a solo section rather than performing simultaneously.
A couplet is a two-line stanza; if the two lines rhyme it is called a rhyming couplet. A tercet or triplet is a three-line stanza. A quatrain is a four-line stanza. Sometimes a stanza is called a verse or a stroph. The meaning is essentially the same, but stanza is the far more popular term. The important thing to remember is that, except when you are using a set form, you have a great deal of leeway in how you use stanzas.