The noun "strength" can be both countable and uncountable.
Meaning: physical power, or how strong someone or something is
Example sentence: The refrigerator was really heavy, and lifting it took all our strength.
Meaning: an important ability or feature
Example sentence: Julia's greatest strength is her ability to see and overcome her own weaknesses.
Test your understanding:
- One of the team's best qualities is the strength of its defence.
- One of the team's strengths is the high quality of its defence.