What does it mean by "bura"and "nok" in archaeology?

Question

i met with these sentences when reading:

He notes the author's comments in a 1960 book, for example, that "African clay sculptures are very delicate, and are rarely to be found in museums." By 1984, all that had changed, probably brought about by an exhibition at the Zurich Kunsthaus in 1970, which sparkled a "a collecting frenzy." Bura statuettes from Niger were only discovered in1983， in an official dig. But after a show toured France in the 1990s, widescale lotting of Niger followed. Many were on sale at the Hamill Gallery in Boston in 2000, together with 44 Nok terra-cottas.

what does it mean by "bura"and "nok" ?

a thousand thanks.

Answer 1

They are "  large terracotta funeral jars, which may be tubular or ovoid in shape, topped by heads, effigies or even horsemen. "

See the site linked below for more details.http://icom.museum/redlist/afrique/engli...

Nok is a town in Nigeria.

See this link http://www.hamillgallery.com/EXHIBITIONS...