✅ Swiftness refers to the quality of moving quickly or without delay (I was pleased with the swiftness of the decision).

✅ Celerity refers to speed and promptness (He finished the project with remarkable celerity).

✅ Swiftness especially suggests an economical and light way of moving or doing something (Some dogs are known for their swiftness, and others for their laziness).

✅ Celerity, on the other hand, emphasizes the speed of the movement, and it is a less common and more formal word (The taxi driver got us to the airport with celerity).

✅ A cot is a light, portable bed (The hotel supplied an extra cot).

✅ A trundle bed, sometimes trundle, is a low bed on wheels which is designed to roll under another bed for storage (The spare trundle bed was comfortable enough for a sleepover).

✅ Cot can refer to any kind of bed that is easy to move or travel with. It can also refer to a hammock-like bed that hangs from a solid frame (I set up my cot in the corner of the room).

✅ Cot and trundle bed refer to two different types of beds, but both terms suggest beds that are portable or suitable for guests.

✅ Honeylike simply describes things that are like honey in some way, maybe in color, texture, or sweetness (The sauce had a honeylike texture).

✅ Mellifluous means sweet-sounding and flowing, and it comes from the Latin words for "honey" and "flow" (Her speaking voice was firm but mellifluous).

✅ Honeylike is a less common word and generally refers to taste and texture (The syrup tasted shockingly honeylike).

✅ Mellifluous is more common and is used to refer to voices and sounds which are as sweet as honey (The mellifluous music filled the room).