Christian art is incredibly diverse, spanning centuries and cultures. Here's a breakdown of some of the major types:
1. Painting:
*   Icons: Primarily associated with Eastern Orthodox Christianity, icons are stylized depictions of Jesus Christ, Mary, saints, and biblical scenes. They are seen as windows into heaven and objects of veneration.
*   Frescoes: Wall paintings applied to wet plaster, common in churches, cathedrals, and monasteries.
*   Panel Paintings: Paintings on wooden panels, often used for altarpieces or individual devotional images.
*   Illuminated Manuscripts: Hand-decorated pages in books, especially Bibles and liturgical texts, featuring intricate artwork and calligraphy.
*   Oil Paintings: Later development, primarily used for altarpieces, portraits, and narrative scenes. Allowed for greater realism and detail.
2. Sculpture:
*   Relief Sculpture: Sculptures that are raised from a background surface, often found on sarcophagi, altarpieces, and architectural elements.
*   Free-Standing Sculpture: Sculptures that are independent and can be viewed from all sides. These can range from small devotional statues to monumental figures.
*   Statues of Christ: Depictions of Christ, often on the Cross (crucifixes) or as the Good Shepherd.
*   Statues of Mary (Madonna): Images of the Virgin Mary, often holding the infant Jesus.
*   Statues of Saints: Depictions of important figures in Christian history, holding symbolic objects or wearing specific attire.
3. Architecture:
*   Churches and Cathedrals: The primary architectural expression of Christian faith.
    *   Early Christian/Basilica: Simple, rectangular structures with a central nave and an apse.
    *   Romanesque: Characterized by rounded arches, thick walls, and small windows.
    *   Gothic: Featuring pointed arches, ribbed vaults, flying buttresses, and large stained-glass windows.
    *   Renaissance: Revival of classical forms, emphasizing symmetry and harmony.
    *   Baroque: Ornate and dramatic, characterized by complex forms and lavish decoration.
*   Monasteries: Buildings designed for monastic communities, including chapels, dormitories, refectories, and libraries.
4. Stained Glass:
*   Narrative Windows: Depicting biblical stories, lives of saints, or other religious themes.
*   Decorative Windows: Using colored glass to create patterns and designs.
*   Often found in Gothic cathedrals to provide light and teach scripture.
5. Mosaics:
*   Pictures or patterns created by assembling small pieces of colored glass, stone, or other materials.
*   Common in Early Christian and Byzantine churches, used to decorate walls and ceilings.
6. Metalwork:
*   Chalices and Patens: Used for the Eucharist (Communion).
*   Reliquaries: Containers for relics of saints.
*   Crosses and Crucifixes: Symbolic objects used in worship and devotion.
*   Processional Crosses: Used in religious processions.
7. Textiles:
*   Vestments: Garments worn by clergy during religious services, often decorated with embroidery and symbolism.
*   Tapestries: Large woven wall hangings, often depicting biblical scenes or religious themes.
*   Altar Cloths: Used to cover the altar during services.
8. Other Forms:
*   Calligraphy: Beautiful and stylized writing, used in illuminated manuscripts and other religious texts.
*   Music: Sacred music, including hymns, chants, and oratorios.  While not visual art, it's an important art form associated with Christianity and often inspires visual art.
*   Drama: Mystery plays and passion plays, which dramatize biblical stories and events.
*   Christian Fiction: Novels, short stories, and other forms of literature that explore Christian themes.
*   Films: Movies based on the Bible or Christian stories.
Beyond these categories, it's important to consider the following contextual elements:
*   Purpose: Is it for worship, education, personal devotion, or public display?
*   Denomination:  Different Christian denominations have different artistic traditions and preferences (e.g., Orthodox icons vs. Protestant emphasis on simplicity).
*   Historical Period:  Art styles change dramatically over time, reflecting cultural and theological shifts.
*   Regional Variations:  Different regions within Christianity develop their own distinct artistic styles.
This list is not exhaustive, but it provides a comprehensive overview of the major types of Christian art and the important factors to consider when studying it. Remember that art is a constantly evolving form of expression, so new forms of Christian art continue to emerge.