As nouns the difference between puberty and periods

is that puberty is the age at which a person is first capable of sexual reproduction while periods is plural of lang=en.

As nouns the difference between echo and imitation

is that echo is a reflected sound that is heard again by its initial observer while imitation is the act of imitating.

As a verb echo

is to reflect off of a surface and return.

As a noun facet

is any one of the flat surfaces cut into a gem.

As a verb facet

is to cut a facet into a gemstone.

As a proper noun fold is

earth.

As adverbs the difference between literarily and literately

is that literarily is in a literary manner while literately is in the way of one who is literate.

As nouns the difference between traction and speed

is that traction is the act of pulling something along a surface using motive power while speed is the state of moving quickly or the capacity for rapid motion; rapidity.

As verbs the difference between traction and speed

is that traction is {{cx|medicine|transitive|lang=en}} To apply a sustained pull to (a limb, etc.) while speed is to succeed; to prosper, be lucky.

As a proper noun Speed is

{{surname|from=nicknames}.

Inexpressible is a synonym of indescribable.

As adjectives the difference between indescribable and inexpressible

is that indescribable is impossible, or very difficult to describe while inexpressible is unable to be expressed.

As nouns the difference between shellfish and oyster

is that shellfish is an aquatic invertebrate, such as a mollusc or crustacean, that has a shell, especially as food while oyster is any of certain marine bivalve mollusks, especially those of the family Ostreidae (the true oysters), usually found adhering to rocks or other fixed objects in shallow water along the seacoasts, or in brackish water in the mouth of rivers.

As an adjective oyster is

of a pale beige colour tinted with grey or pink, like that of an oyster.

As a verb oyster is

to fish for oysters.

As nouns the difference between heterogeneity and difference

is that heterogeneity is (uncountable) diversity while difference is difference.

As verbs the difference between hesitate and sway

is that hesitate is to stop or pause respecting decision or action; to be in suspense or uncertainty as to a determination while sway is to move or swing from side to side; or backward and forward; to rock.

As a noun sway is

the act of swaying; a swaying motion; a swing or sweep of a weapon.

As nouns the difference between hesitation and sway

is that hesitation is hesitation while sway is the act of swaying; a swaying motion; a swing or sweep of a weapon.

As a verb sway is

to move or swing from side to side; or backward and forward; to rock.