As a noun arbuscle

is (botany) a plant midway between a shrub and a tree.

As an adjective periarbuscular is

situated around an arbuscle.

As nouns the difference between shrub and arbuscle

is that shrub is a woody plant smaller than a tree, and usually with several stems from the same base or shrub can be a liquor composed of vegetable acid, fruit juice (especially lemon), sugar, sometimes vinegar, and a small amount of spirit as a preservative modern shrub is usually non-alcoholic, but in earlier times it was often mixed with a substantial amount of spirit such as brandy or rum, thus making it a liqueur while arbuscle is (botany) a plant midway between a shrub and a tree.

As a verb shrub

is (obsolete) to lop; to prune.

As nouns the difference between tree and arbuscle

is that tree is a large plant, not exactly defined, but typically over four meters in height, a single trunk which grows in girth with age and branches (which also grow in circumference with age) while arbuscle is (botany) a plant midway between a shrub and a tree.

As a verb tree

is to chase (an animal or person) up a tree.

As nouns the difference between hypha and arbuscle

is that hypha is (mycology) any of the long, threadlike filaments that form the mycelium of a fungus while arbuscle is (botany) a plant midway between a shrub and a tree.

As adjectives the difference between fungal and perifungal

is that fungal is of or pertaining to a fungus or fungi while perifungal is (biology) surrounding a fungal hypha.

As a noun hypha

is (mycology) any of the long, threadlike filaments that form the mycelium of a fungus.

As an adjective perifungal is

(biology) surrounding a fungal hypha.

As a noun microbe

is (microbiology) any microorganism, but specially said of those microorganisms which are harmful types of bacteria.

As an adjective perimicrobial is

surrounding a microbe; especially surrounding a bacterium within a higher organism.

As a noun bacterium

is (microbiology) a single celled organism with no nucleus.

As an adjective perimicrobial is

surrounding a microbe; especially surrounding a bacterium within a higher organism.

As a noun nucleus

is the core, central part (of something), round which others are assembled.

As an adjective perinuclear is

surrounding a nucleus.

As a verb plasma

is .

As an adjective periplasmic is

surrounding the plasma of a bacterium.