Comparison between Lord Vishnu and Lord Shiva by each parts, qualities, astras etc.
Lord Vishnu and Lord Shiva both are of infinite qualities and infinite attributes. They are the same Lord moving in two different forms.
Lord Krishna in Vishnu Purana in the Banasura fight chapter states:
अविद्यामोहितात्मान पुरुषा भिन्न दर्शिन ।
वदन्ति भेद पश्यन्ति चावयोरन्तर हरः ।।
Person whose Atman is deluded by Avidya sees difference between me and Hara (Shiva). He alone sees and talks difference between me and Hara.
In the above verse Lord Krishna uses the term "AvidyaMohitatmana" ie. Whose Atman is deluded by Avidya/Ignorance. Similarly Harivamsha Parva of Mahabharata in Banasura fight chapter states:
एक एव द्विध भूतो लोके चरति नित्यस ।।
The same Lord is always moving in World in two different forms (ie. Shiva and Vishnu)
So, as they are same, quality of one Lord definitely belongs to another Lord. Similarly their wearing, astra and clothes belong to each other as they are same. However this relation is hard to conceive for people as they are deluded by ignorance. Even Lord Brahma sees this relation in dream, [Harivamsha Parva Mahabharata Banasura fight episode (2.125 section)]:
हरं च हरिरुपेण हरिं च हररुपिणम् ।
शङ्खचक्रगदापाणि पीताम्बरधरं हरम्।।
Hara was on the form of Hari and Hari was on the form of Hara. Hara was wearing yellow clothes and in his hands were Sankha, Chakra and Gada.
त्रिशुलपट्टिशधरं व्याघ्रचर्मधरं हरिम् ।
गरुडस्थ चापि हरं हरिं च वृषभध्वजम् ।।
Hari was wearing tiger skin and holding a Trishula. Hara was riding on Garuda and Hari was riding on bull.
And in the same chapter, when Brahma tells the above fact, then Markandaye states:
शिवाय विष्णु रुपाय विष्णवे शिवरुपिने ।
यथान्तरं न पश्यमि तेन तौ दिष्ट: शिवम् ।।
Shiva is in the form of Vishnu and Vishnu is in the form of Shiva. There is no difference between them and both provide Auspiciousness.
- Lord Vishnu is quite whereas Lord Shiva gets angry easily.
- Lord Vishnu offer boon with thorough care whereas Lord Shiva will grant boon if he was praised. This is applicable to Lord Brahma also. Example--Ravana got the boons from Lord Shiva and once he went to kailash and tried to shake it. At last he was killed by Lord Vishnu.
- Lord Vishnu's main weapons are shanku and chakra whereas Lord Shiva's weapon is trident.[soolam] 4.Albeit Lord Vishnu is described as preserver and Lord Shiva as destroyer in charanagathi Tatwa it is mentioned as Lord Vishnu is one and all. Creator, preserver and destroyer.
- Lord Vishnu is sky blue in colour [Yoga sleep in milky ocean] and Lord Shiva is dark blue from neck to feet because he drank the poison from the churn of Amirtham.
Vishnu puranam, Shiva puranam, Bagavatham, Kodayin Paadhai are the books from where the citings can be seen.