Russian words in English: 10 questions

Give the Russian word, also used in English and found in the Oxford English dictionary, from the definition. The number refers to the number of letters in the word

1. Russian word for "Citadel" or "Fortress", generally used with reference to a specific example in English (7)
2. A steam bath with a wooden stove. (5)

Polymaths: 10 questions

1. Which architect was also a reputed scientist, and was appointed Savilian Professor of Astronomy at Oxford in 1661?
2. Which 12th century German saint is primarily known as the composer of works such as Ordo Virtutum, but also wrote several works of philosophy and theology, and was also famed for her botanical and medicinal knowledge?