Are Lammas and Lughnasadh the Same?

Wiccans use the names "Lughnasadh" or "Lammas" for the first of their autumn harvest festivals. It is one of the eight yearly "Sabbats" of their Wheel of the Year, following Midsummer and preceding Mabon.

What Lammas means?

The word Lammas comes from an Old English phrase that translates to “loaf mass.” In early Christianity, the first loaves of the season were blessed by the church during mass. In some traditions, this day honors the Celtic god, Lugh. This celebration of the god, Lugh is referred to as Lughnasad (pronounced Loo-NAS-ah).

What did Samhain mark?

Samhain was one of the four main festivals of the Gaelic calendar, marking the end of the harvest and beginning of winter. Samhain customs are mentioned in several medieval texts.