In the nature of something
Definition 1 of 2
Pro Tip 1/3Figurative Use
Expresses abstract similarity rather than physical likeness between two things. 
His interactions with the group were in the nature of an observer, not a participant.
Pro Tip 2/3Metaphorical Comparison
Often introduces a metaphorical or not immediately obvious comparison. 
Her speech was in the nature of a battle cry, rallying everyone to action.
Pro Tip 3/3Subtle Differences
Used to highlight subtle distinctions in circumstances or relationships. 
The talk was more in the nature of a gentle warning than an outright prohibition.