As an adjective bilateral

is bilateral.

As a noun antimere is

(biology) one of the two halves of bilaterally symmetrical animals; one of any opposite symmetrical or homotypic parts in animals and plants.

As an adjective symmetrical

is exhibiting symmetry; having harmonious or proportionate arrangement of parts; having corresponding parts or relations.

As a noun antimere is

(biology) one of the two halves of bilaterally symmetrical animals; one of any opposite symmetrical or homotypic parts in animals and plants.

As nouns the difference between animal and antimere

is that animal is in scientific usage, a multicellular organism that is usually mobile, whose cells are not encased in a rigid cell wall (distinguishing it from plants and fungi) and which derives energy solely from the consumption of other organisms (distinguishing it from plants) while antimere is (biology) one of the two halves of bilaterally symmetrical animals; one of any opposite symmetrical or homotypic parts in animals and plants.

As an adjective animal

is of or relating to animals.

As an adjective homotypic

is (botany) literally "with the same type" in botanical nomenclature a homotypic synonym (or nomenclatural synonym) is a synonym that comes into being through a nomenclatural act.

As a noun antimere is

(biology) one of the two halves of bilaterally symmetrical animals; one of any opposite symmetrical or homotypic parts in animals and plants.

As nouns the difference between speech and bradylalia

is that speech is the faculty of uttering articulate sounds or words; the ability to speak or to use vocalizations to communicate while bradylalia is a form of dysarthria characterized by very slow speech.

As an adjective paraphyletic

is of a defined group of taxa, not including all descendants of the common ancestor of all members.

As a noun paraclade is

a group of paraphyletic or monophyletic evolutionary lineages.

As an adjective monophyletic

is of, pertaining to, or affecting a single phylum (or other taxon) of organisms.

As a noun paraclade is

a group of paraphyletic or monophyletic evolutionary lineages.

As an adjective evolutionary

is of or relating to evolution.

As a noun paraclade is

a group of paraphyletic or monophyletic evolutionary lineages.

As nouns the difference between lineage and paraclade

is that lineage is descent in a line from a common progenitor; progeny; race; descending line of offspring or ascending line of parentage while paraclade is a group of paraphyletic or monophyletic evolutionary lineages.

As an adjective primordial

is first, earliest or original.

As a noun primordial

is a first principle or element.

As an acronym luca is

(taxonomy|biology|paleontology) last universal common ancestor; the hypothesised most recent primordial organism that is an ancestor to all organisms now living.