bậc
noun

(of a ladder) a rung
a stair or step
(by extension) a level; a rank
(arithmetic, of an exponential product, formal) a degree; a power
(arithmetic, of a root) a degree
(algebra, of a monomial, polynomial, equality, equation, function, etc.) a degree; an order

Used for respected people.

bậc trung

bậc trung
noun

midranking
average

bậc tự do

bậc tự do
noun

(physics, mathematics) degree of freedom

bận
noun

(literary) time; occurrence

adj

busy; occupied

verb

(Central Vietnam, Southern Vietnam) to wear (clothes)

bận bịu

bận bịu
adj

busy (with work) (generally speaking)

bận rộn

bận rộn
adj

busy

bận tâm
verb

(somewhat literary or formal) to care about, to pay heed to

bập bênh

bập bênh
noun

a seesaw (structure)

bập bõm
adv

(remembering, understanding, speaking) defectively, sometimes good and other times bad; in a way that is filled with misses

bập bùng

bập bùng
adj

flickering; wavering

bập bẹ
verb

to babble; to prattle

bật
verb

(intransitive) to bounce off; to bounce back
(transitive) to snap; to switch on (lights)
(intransitive) to feature prominently
to do something suddenly

bật hơi
verb

(phonology) to aspirate

bật lửa

bật lửa
noun

(Northern Vietnam, Central Vietnam) lighter

bật mí
verb

to reveal (a secret, an unknown fact, a tip)

bật đèn xanh

bật đèn xanh
verb

(figuratively, colloquial) to give the green light to

bậu
pron

(archaic, literary) you

bậy
adj

morally wrong
false

bậy bạ
adj

mischievous

verb

to speak impolitely of another

tiên sư
noun

(uncommon) the intellectuals of the old days; the "old master"
(honorific) progenitor of a particular craftsmanship

intj

(Northern Vietnam, offensive) used in insults

tù trưởng

tù trưởng
noun

chieftain, tribal chief

丕
character

chữ Hán form of phi (“large; grand”).
Nôm form of vầy (“such; like this”).
Nôm form of vậy (“so; thus”).

北
character

chữ Hán form of bắc (“north”).

半
character

chữ Hán form of bán (“half”).
Nôm form of vắn (“short, brief”).
Nôm form of bán (“to sell”).
Nôm form of bớn.

暴
character

chữ Hán form of bạo (“ferocious; cruel; violent”).