As nouns the difference between modelling and biomodelling
is that modelling is an alternative spelling of from=British spelling|lang=en while biomodelling is the modelling of biological systems, especially of ecosystems.
As a verb modelling
is present participle of lang=en.
modelling
English
Verb
(head)
(British spelling)
Noun
biomodelling
English
Noun
(-)
(computing, biology) The modelling of biological systems, especially of ecosystems