In the Catholic Church, a religious order is a community of consecrated life with members who profess solemn vows. They are classed as a type of religious institute.
Saint Francis of Assisi, founder of the mendicant Order of Friars Minor, as painted by El Greco
Abbot Thomas Schoen, OCist
Saint Bruno of Cologne, founder of the Order of Carthusians, as painted by Nicolas Mignard
The Canons Regular are Catholic priests and religious brothers who live in community under a rule and are generally organised into religious orders, differing from both secular canons and other forms
Religious order (Catholic)
…Subcategories of religious orders are: canons regular (canons and canonesses regular who recite the Divine Office and serve a church and perhaps a parish); clerics regular (priests who take religious vows…
Visitation memento mori, painter unknown, c.1500, juxtaposing pregnancy and death, with four Augustinan canons regular of the Chapter (Abbey) of Sion. Left, with little lion, is Jerome; right, holding a heart, is Augustine. Rijksmuseum
Bishop Chrodegang of Metz
Ballybeg Priory, founded in 1229 by Philip de Barry for the Canons Regular of St Augustine
Abbess Joanna van Doorselaer de ten Ryen, Waasmunster Roosenberg Abbey.