✅ Red describes something that is of the color of a ruby or the primary color at one end of the visible spectrum (red shoes; red leaves).

✅ Cardinal describes something that is a particularly deep and rich shade of red, like that of the male bird by the same name (a cardinal jacket; a cardinal scarf).

✅ Red can describe a lot of different shades and tones, whereas cardinal is pretty specific.

✅ Bountiful describes having an abundance of something or something being particularly generous (a bountiful feast).

✅ Lavish describes something abundant or generous (a lavish party; lavish spending).

✅ Both these words suggest having and often sharing a great deal of something.

✅ Lavish can tip the scale into extravagance or being too free with money, hospitality, or similar.

✅ Reserve refers to something that is kept and stored either just in case or in preparation for a specific event or emergency, but it can also refer to intangible things (I kept a reserve of canned foods at the cabin; He had a reserve of energy).

✅ Reservoir refers to a large supply of something that can be drawn on or used when needed (The community had reservoirs of gas to be used for their buses).

✅ While you might be more familiar with the sense of reservoir meaning a large store of water, reservoir can also refer to a large store of intangible things like emotions (She possessed a reservoir of calm that others relied on).

✅ These two words have similar meanings, but reserve is used more widely for physical things.