myofibrilla vs myofibril

myofibrilla and myofibril both are nouns.

Word	Noun	Adjective	Verb	Adverb
myofibrilla	Yes	No	No	No
myofibril	Yes	No	No	No

As nouns, myofibrilla and myofibril are synonyms defined as:

myofibrilla and myofibril: one of many contractile filaments that make up a striated muscle fiber

Other synonyms of myofibrilla include sarcostyle.

myofibrilla (noun)	myofibril (noun)
one of many contractile filaments that make up a striated muscle fiber	one of many contractile filaments that make up a striated muscle fiber