A country dance is any of a very large number of social dances of a type that originated in the British Isles; it is the repeated execution of a predefined sequence of figures, carefully designed to fit a fixed length of music, performed by a group of people, usually in couples, in one or more sets. The figures involve interaction with your partner and/or with other dancers, usually with a progression so that you dance with everyone in your set. It is common in modern times to have a "caller" who teaches the dance and then calls the figures as you dance. Country dances are done in many different styles.
Comical 18th-century country dance; engraving by Hogarth
Village country dance; engraving by Abraham Bosse, 1633
Lorin's contradanse choreography, one of the earliest western dance notations
The "La Trénis" figure of the Contredanse, an illustration from Le Bon Genre, Paris, 1805
Morris dancing is a form of English folk dance. It is based on rhythmic stepping and the execution of choreographed figures by a group of dancers in costume, usually wearing bell pads on their shins and/or shoes. A band or single musician, also costumed, will accompany them. Sticks, swords, handkerchiefs, and a variety of other implements may be wielded by the dancers.
Morris dancers with handkerchiefs in York
One of Erasmus Grasser's small Moriskentänzer statues from 1480, showing what would have been termed a "moorish" dancer, where the other nine surviving carvings are fairer-skinned. All wear bells on their legs.
Illustration of William Kempe Morris dancing from London to Norwich in 1600
Morris dancers and a hobby horse: detail of Thames at Richmond, with the Old Royal Palace, c. 1620