bread: a baked loaf, the physical product of ground grain.
The most concrete use of this word is for actual bread, the kind you hold, break, and share. This covers everything from ordinary loaves brought to a meal or sent as a gift, to the twelve ritual loaves set before God in the sanctuary (the showbread, called the bread of the Presence). Baking bread was the primary way grain was prepared and eaten, so the word for bread naturally stood for the staple food of life.
Within this sense the word covers plain household bread and the special cultic loaves equally. The showbread passages in Exodus, Leviticus, and the temple accounts treat the loaves as offerings, but the underlying word is the same everyday bread. There is no separate vocabulary for ritual loaves versus common bread; context and the construct phrase distinguish them. Several passages in Leviticus speak of the priest offering the bread of his God, using the same ordinary word for cultic presentation.
This sense also includes bread used as trade goods or gifts: Jacob gave Esau bread and lentil stew; Ziba brought two hundred loaves as a present to David; ravens carried bread to Elijah. Whether as daily provision, a gift between parties, or sacred offering, the word names the same physical thing.