type of harp
篌 refers to a specific type of harp, a stringed musical instrument. The meaning is narrow and concrete, centered on this particular instrument.
篌 combines 竹 (bamboo) with 侯, which likely contributes the sound. The bamboo radical suggests the material used to make the harp.
The top 竹 is bamboo, and the bottom 侯 looks like a person sitting with a stringed instrument. Picture a harp made of bamboo being played by a seated musician.
For ゴ, imagine a harpist playing a slow, resonant note that sounds like 'go'. The deep 'go' sound cues ゴ and fits the harp's tone.