The Nuance Difference: "いつも" vs "役に立つ"

In Japanese, both いつも and 役に立つ are often translated to English but have distinct usages. いつも (いつも (itsumo)) represents "always, usually, habitually" (Level: N5) and typically represents Adverb of frequency. Indicates something happens all the time or habitually without exception.. On the other hand, 役に立つ (やくにたつ (yaku ni tatsu)) translates to "to be useful, to be helpful" (Level: N4) and is used for A set phrase meaning to be useful or helpful for someone or something. It describes the utility of an object, skill, or person. Often followed by the particle に. Mixing these up can sound unnatural to native Japanese speakers!