In Jainism, Anekāntvād and Syādvād (you wrote “shiyavad”) are closely connected ideas about truth and reality.

I’ll explain both in very simple words:

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1. Anekāntvād – दर्शन का अनेक‑पक्षीय सिद्धांत

Meaning:

• “Anekānta” = many-sided
• “Vāda” = doctrine / teaching

So Anekāntvād means: > Reality and truth have many aspects; no single viewpoint gives the whole truth.

Key points

• Every thing (dravya), quality, event has many angles – time, place, condition, relation, use, etc.
• When we see only one angle and insist “only I am right”, that is ekānta (one‑sided view), which Jainism rejects.
• Anekāntvād teaches:

- humility in knowledge – “I know something, not everything” - tolerance – others may also hold a partial truth - careful thinking – before judging, see context (desh, kāl, bhāv, dravya).

Simple example

Blind men and the elephant:

• One touches the leg: “Elephant is like a pillar.”
• One touches the ear: “Elephant is like a fan.”
• One touches the tail: “Elephant is like a rope.”

Each statement is partly true but not complete. Anekāntvād says: accept the truth in each and also see the bigger, complete picture.

Both Digambar and Shvetāmbara accept Anekāntvād as a core Jain principle; differences are only in some philosophical detail, not in the basic meaning. ( jainknowledge.com)

You can read more here

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2. Syādvād (Shiyavād) – “किसी दृष्टि से” कहने की पद्धति

Meaning of word:

• “Syāt” = “in some respect”, “from a certain viewpoint”, “किसी प्रकार से / किसी दृष्टि से”
• “Vāda” = doctrine / method

So Syādvād is the method of speaking in a way that fits Anekāntvād. It says: > Any statement is true under some conditions / from some viewpoint, not absolutely in every way.

Therefore, Jains often add “syāt” in thought:

• “Syāt – from this angle it is so; from another angle it may not be so.”

Saptabhaṅgī – 7-fold way of saying

Syādvād uses 7 possible modes for any statement (you don’t need Sanskrit, but I’ll show once):

1. Syād‑asti – in some way it exists.
2. Syād‑nāsti – in some way it does not exist.
3. Syād‑asti‑nāsti – in some ways it exists and does not exist.
4. Syād‑asti‑avaktavyaḥ – in some way it exists and is indescribable.
5. Syād‑nāsti‑avaktavyaḥ – in some way it does not exist and is indescribable.
6. Syād‑asti‑nāsti‑avaktavyaḥ – in some way it exists, does not exist, and is indescribable.
7. Syād‑avaktavyaḥ – in some way it is indescribable.

This looks technical, but the spirit is simple: “Don’t talk in hard, absolute terms. Always remember condition, place, time, angle.” ( jainknowledge.com)

You can read more here

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Relation between Anekāntvād and Syādvād

• Anekāntvād = truth is many‑sided (philosophical principle).
• Syādvād = speak and think according to that many‑sidedness (practical method of expression).

In short:

• Anekāntvād says: “Reality is multi‑faceted.”
• Syādvād says: “So, when you speak about reality, always say it conditionally – ‘from this viewpoint’.”

Both doctrines help:

• reduce intellectual himsā (violence of harsh, dogmatic views),
• increase vinay, sahanshilatā, and samvāda (humility, tolerance, and healthy dialogue). ( jainknowledge.com)