This is the 8176th most frequent Korean word.
im
The Korean word "임" can mean "appointed person," "duty," or "pregnancy," depending on context.
'이음' in this sentence is a noun meaning 'connection' or 'link' in Korean.
이것은 이음이다.
This is a connection.
'믿음' here means 'trust' or 'belief', formed by combining the verb stem '믿-' (to believe) with the nominalizer '음' to make it a noun.
나는 믿음을 소중히 여긴다.
I value trust highly.
'이룰' is a verb meaning 'to achieve', and while '음' is not directly in this sentence, syllables '임' and similar forms can often serve various lexical or grammatical functions depending on context.