As nouns the difference between playback and soundboard

is that playback is the replaying of previously recorded sound or moving images while soundboard is (music) a board placed within a musical instrument to improve vibrations.

As a noun sneaker

is one who sneaks.

As an adjective sneakered is

wearing sneakers.

As an adjective bacteria

is bacterial.

As a noun forespore is

(biology) the structure, in bacteria, in which an endospore develops.

As a noun excitonics

is the study of excitons.

As an adjective excitonic is

of or pertaining to excitons or excitonics.

As nouns the difference between rumba and soukous

is that rumba is a slow-paced Cuban partner dance in 4:4 time while soukous is a genre of African popular music resembling rumba, which originated in the Congo region in the 1930s.

As a verb rumba

is to dance the rumba.

As a proper noun Congo

is a country in Central Africa with Brazzaville as capital. Official name: Republic of the Congo.

As a noun soukous is

a genre of African popular music resembling rumba, which originated in the Congo region in the 1930s.

As an adjective ferromagnetic

is (physics) of a material, such as iron or nickel, that is easily magnetized.

As an adverb ferromagnetically is

in a ferromagnetic manner.

As a noun ferromagnetism

is (physics) the phenomenon whereby certain substances can become permanent magnets when subjected to a magnetic field.

As an adverb ferromagnetically is

in a ferromagnetic manner.

As nouns the difference between stepbrother and stepsibling

is that stepbrother is the son of one's stepfather or stepmother who is not the son of one's mother and is not the son of one's father while stepsibling is the child of one's stepfather or stepmother from another relationship; a stepbrother or stepsister.

Stepsibling is a hyponym of stepsister.

As nouns the difference between stepsister and stepsibling

is that stepsister is the daughter of one's stepfather or stepmother who is not the daughter of one's mother and is not the daughter of one's father while stepsibling is the child of one's stepfather or stepmother from another relationship; a stepbrother or stepsister.