qinghai

As proper nouns the difference between qinghai and henan

is that qinghai is a province in China while Henan is a province in the central part of the People's Republic of China.

As a proper noun qinghai

is a province in china.

As a letter y is

the letter y with a (l) above itself.

As a noun china

is (uncountable) the root of a climbing plant, smilax china l, once believed to have important medicinal properties or china can be (cockney rhyming slang|countable) mate (ie, friend).

As a proper noun qinghai is

a province in china.

As proper nouns the difference between province and qinghai

is that province is (british) northern ireland while qinghai is a province in china.

As a noun province

is a subdivision of government usually one step below the national level; (canada) one of ten of canada's federated entities, recognized by the constitution and having a separate representative of the sovereign (compare territory).

As proper nouns the difference between qinghai and xining

is that qinghai is a province in china while xining is a city in northwestern china, capital of qinghai province.