durmast vs white oak

durmast and white oak both are nouns.

Word	Noun	Adjective	Verb	Adverb
durmast	Yes	No	No	No
white oak	Yes	No	No	No

As nouns, white oak is a hypernym of durmast; that is, white oak is a word with a broader meaning than durmast:

durmast: deciduous European oak valued for its tough elastic wood
white oak: any of numerous Old World and American oaks having 6 to 8 stamens in each floret, acorns that mature in one year and leaf veins that never extend beyond the margin of the leaf

durmast (noun)	white oak (noun)
deciduous European oak valued for its tough elastic wood	any of numerous Old World and American oaks having 6 to 8 stamens in each floret, acorns that mature in one year and leaf veins that never extend beyond the margin of the leaf