force
The Italian word 'forza' is used exactly like the English word 'force'. It can refer to physical strength or power (force), encouragement (come on or cheer up), or a measure of effort applied (force). It is used in many common phrases such as 'forza d'animo' (strength of mind), 'metti più forza' (put more force), and 'forza lavoro' (workforce).
Come on, we can do it!
This sentence is used to encourage others or oneself to do something. 'Forza' is used as an interjection in Italian much like 'come on' in English.
I need more strength to push this rock.
In this sentence, 'forza' is used to mean physical 'strength'. This is one of the basic meanings of the word, indicating the power or energy necessary to perform a physical task.
The strength of love is unmatched.
Here, 'forza' is used to describe an abstract, emotional 'strength'. This implies that the power or intensity of love is unparalleled.