Lady day and Quarter day

Lady day noun - A festival commemorating the announcement of the Incarnation by the angel Gabriel to the Virgin Mary; a quarter day in England, Wales, and Ireland.

Quarter day and lady day are semantically related. In some cases you can use "Quarter day" instead a noun phrase "Lady day".

Quarter day noun - A Christian holy day; one of four specified days when certain payments are due.

Lady day and quarter day are semantically related. Sometimes you can replace phrase "Lady day" with "Quarter day", this phrases are similar.